=== tests/cases/conformance/types/typeRelationships/typeAndMemberIdentity/objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts ===
// Two call or construct signatures are considered identical when they have the same number of type parameters and, considering those 
// parameters pairwise identical, have identical type parameter constraints, identical number of parameters with identical kind(required, 
// optional or rest) and types, and identical return types.

class A {
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

    foo<T, U>(x: T, y?: U): T { return null; }
>foo : <T, U>(x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 4, 9))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 8))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 10))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 14))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 8))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 19))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 10))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 5, 8))
>null : null
}

class B<T, U> {
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 8))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 10))

    foo(x: T, y?: U): T { return null; }
>foo : (x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 15))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 9, 8))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 8))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 9, 13))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 10))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 8, 8))
>null : null
}

class C<T, U> {
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 8))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 10))

    foo(x: T, y?: U): T { return null; }
>foo : (x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 15))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 13, 8))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 8))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 13, 13))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 10))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 12, 8))
>null : null
}

interface I<T, U> {
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 12))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 14))

    foo(x: T, y?: U): T;
>foo : (x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 19))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 17, 8))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 12))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 17, 13))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 14))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 16, 12))
}

interface I2 {
>I2 : I2, Symbol(I2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 18, 1))

    foo<T, U>(x: T, y?: U): T;
>foo : <T, U>(x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 20, 14))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 8))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 10))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 14))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 8))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 19))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 10))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 21, 8))
}

var a: { foo<T, U>(x: T, y?: U): T }
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))
>foo : <T, U>(x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 8))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 13))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 15))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 19))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 13))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 24))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 15))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 13))

var b = { foo<T, U>(x: T, y?: U) { return x; } };
>b : { foo<T, U>(x: T, y?: U): T; }, Symbol(b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 3))
>{ foo<T, U>(x: T, y?: U) { return x; } } : { foo<T, U>(x: T, y?: U): T; }
>foo : <T, U>(x: T, y?: U) => T, Symbol(foo, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 9))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 14))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 16))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 20))
>T : T, Symbol(T, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 14))
>y : U, Symbol(y, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 25))
>U : U, Symbol(U, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 16))
>x : T, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 20))

function foo1(x: A);
>foo1 : { (x: A): any; (x: A): any; }, Symbol(foo1, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 49), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 27, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 28, 20))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 27, 14))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo1(x: A); // error
>foo1 : { (x: A): any; (x: A): any; }, Symbol(foo1, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 49), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 27, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 28, 20))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 28, 14))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo1(x: any) { }
>foo1 : { (x: A): any; (x: A): any; }, Symbol(foo1, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 49), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 27, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 28, 20))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 29, 14))

function foo1b(x: B<string, number>);
>foo1b : { (x: B<string, number>): any; (x: B<string, number>): any; }, Symbol(foo1b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 29, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 31, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 32, 37))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 31, 15))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo1b(x: B<string, number>); // error
>foo1b : { (x: B<string, number>): any; (x: B<string, number>): any; }, Symbol(foo1b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 29, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 31, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 32, 37))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 32, 15))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo1b(x: any) { }
>foo1b : { (x: B<string, number>): any; (x: B<string, number>): any; }, Symbol(foo1b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 29, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 31, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 32, 37))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 33, 15))

function foo1c(x: C<string, number>);
>foo1c : { (x: C<string, number>): any; (x: C<string, number>): any; }, Symbol(foo1c, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 33, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 35, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 36, 37))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 35, 15))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo1c(x: C<string, number>); // error
>foo1c : { (x: C<string, number>): any; (x: C<string, number>): any; }, Symbol(foo1c, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 33, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 35, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 36, 37))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 36, 15))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo1c(x: any) { }
>foo1c : { (x: C<string, number>): any; (x: C<string, number>): any; }, Symbol(foo1c, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 33, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 35, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 36, 37))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 37, 15))

function foo2(x: I<string, number>);
>foo2 : { (x: I<string, number>): any; (x: I<string, number>): any; }, Symbol(foo2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 37, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 39, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 40, 36))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 39, 14))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo2(x: I<string, number>); // error
>foo2 : { (x: I<string, number>): any; (x: I<string, number>): any; }, Symbol(foo2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 37, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 39, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 40, 36))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 40, 14))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo2(x: any) { }
>foo2 : { (x: I<string, number>): any; (x: I<string, number>): any; }, Symbol(foo2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 37, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 39, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 40, 36))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 41, 14))

function foo3(x: typeof a);
>foo3 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo3, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 41, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 43, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 44, 27))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 43, 14))
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))

function foo3(x: typeof a); // error
>foo3 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo3, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 41, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 43, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 44, 27))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 44, 14))
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))

function foo3(x: any) { }
>foo3 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo3, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 41, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 43, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 44, 27))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 45, 14))

function foo4(x: typeof b);
>foo4 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo4, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 45, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 47, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 48, 27))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 47, 14))
>b : { foo<T, U>(x: T, y?: U): T; }, Symbol(b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 3))

function foo4(x: typeof b); // error
>foo4 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo4, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 45, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 47, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 48, 27))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 48, 14))
>b : { foo<T, U>(x: T, y?: U): T; }, Symbol(b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 3))

function foo4(x: any) { }
>foo4 : { (x: { foo<T, U>(x: T, y?: U): T; }): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo4, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 45, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 47, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 48, 27))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 49, 14))

function foo5(x: A);
>foo5 : { (x: A): any; (x: B<string, number>): any; }, Symbol(foo5, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 49, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 51, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 52, 36))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 51, 14))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo5(x: B<string, number>); // ok
>foo5 : { (x: A): any; (x: B<string, number>): any; }, Symbol(foo5, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 49, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 51, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 52, 36))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 52, 14))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo5(x: any) { }
>foo5 : { (x: A): any; (x: B<string, number>): any; }, Symbol(foo5, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 49, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 51, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 52, 36))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 53, 14))

function foo5b(x: A);
>foo5b : { (x: A): any; (x: C<string, number>): any; }, Symbol(foo5b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 53, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 55, 21), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 56, 37))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 55, 15))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo5b(x: C<string, number>); // ok
>foo5b : { (x: A): any; (x: C<string, number>): any; }, Symbol(foo5b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 53, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 55, 21), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 56, 37))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 56, 15))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo5b(x: any) { }
>foo5b : { (x: A): any; (x: C<string, number>): any; }, Symbol(foo5b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 53, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 55, 21), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 56, 37))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 57, 15))

function foo6(x: A);
>foo6 : { (x: A): any; (x: I<string, number>): any; }, Symbol(foo6, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 57, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 59, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 60, 36))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 59, 14))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo6(x: I<string, number>); // ok
>foo6 : { (x: A): any; (x: I<string, number>): any; }, Symbol(foo6, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 57, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 59, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 60, 36))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 60, 14))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo6(x: any) { }
>foo6 : { (x: A): any; (x: I<string, number>): any; }, Symbol(foo6, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 57, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 59, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 60, 36))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 61, 14))

function foo7(x: A);
>foo7 : { (x: A): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo7, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 61, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 63, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 64, 27))
>x : A, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 63, 14))
>A : A, Symbol(A, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 0, 0))

function foo7(x: typeof a); // no error, bug?
>foo7 : { (x: A): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo7, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 61, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 63, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 64, 27))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 64, 14))
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))

function foo7(x: any) { }
>foo7 : { (x: A): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo7, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 61, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 63, 20), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 64, 27))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 65, 14))

function foo8(x: B<string, number>);
>foo8 : { (x: B<string, number>): any; (x: I<string, number>): any; }, Symbol(foo8, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 65, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 67, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 68, 36))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 67, 14))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo8(x: I<string, number>); // error
>foo8 : { (x: B<string, number>): any; (x: I<string, number>): any; }, Symbol(foo8, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 65, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 67, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 68, 36))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 68, 14))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo8(x: any) { }
>foo8 : { (x: B<string, number>): any; (x: I<string, number>): any; }, Symbol(foo8, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 65, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 67, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 68, 36))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 69, 14))

function foo9(x: B<string, number>);
>foo9 : { (x: B<string, number>): any; (x: C<string, number>): any; }, Symbol(foo9, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 69, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 71, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 72, 36))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 71, 14))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo9(x: C<string, number>); // error
>foo9 : { (x: B<string, number>): any; (x: C<string, number>): any; }, Symbol(foo9, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 69, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 71, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 72, 36))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 72, 14))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo9(x: any) { }
>foo9 : { (x: B<string, number>): any; (x: C<string, number>): any; }, Symbol(foo9, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 69, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 71, 36), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 72, 36))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 73, 14))

function foo10(x: B<string, number>);
>foo10 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo10, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 73, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 75, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 76, 28))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 75, 15))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo10(x: typeof a); // ok
>foo10 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo10, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 73, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 75, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 76, 28))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 76, 15))
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))

function foo10(x: any) { }
>foo10 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo10, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 73, 25), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 75, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 76, 28))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 77, 15))

function foo11(x: B<string, number>);
>foo11 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo11, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 77, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 79, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 80, 28))
>x : B<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 79, 15))
>B : B<T, U>, Symbol(B, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 6, 1))

function foo11(x: typeof b); // ok
>foo11 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo11, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 77, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 79, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 80, 28))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 80, 15))
>b : { foo<T, U>(x: T, y?: U): T; }, Symbol(b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 3))

function foo11(x: any) { }
>foo11 : { (x: B<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo11, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 77, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 79, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 80, 28))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 81, 15))

function foo12(x: I<string, number>);
>foo12 : { (x: I<string, number>): any; (x: C<string, number>): any; }, Symbol(foo12, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 81, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 83, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 84, 37))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 83, 15))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo12(x: C<string, number>); // error
>foo12 : { (x: I<string, number>): any; (x: C<string, number>): any; }, Symbol(foo12, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 81, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 83, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 84, 37))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 84, 15))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo12(x: any) { }
>foo12 : { (x: I<string, number>): any; (x: C<string, number>): any; }, Symbol(foo12, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 81, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 83, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 84, 37))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 85, 15))

function foo12b(x: I2);
>foo12b : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo12b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 85, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 87, 23), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 88, 38))
>x : I2, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 87, 16))
>I2 : I2, Symbol(I2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 18, 1))

function foo12b(x: C<string, number>); // ok
>foo12b : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo12b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 85, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 87, 23), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 88, 38))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 88, 16))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo12b(x: any) { }
>foo12b : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo12b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 85, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 87, 23), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 88, 38))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 89, 16))

function foo13(x: I<string, number>);
>foo13 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo13, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 89, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 91, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 92, 28))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 91, 15))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo13(x: typeof a); // ok
>foo13 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo13, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 89, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 91, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 92, 28))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 92, 15))
>a : { foo<T, U>(x: T, y?: U): T; }, Symbol(a, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 24, 3))

function foo13(x: any) { }
>foo13 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo13, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 89, 27), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 91, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 92, 28))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 93, 15))

function foo14(x: I<string, number>);
>foo14 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo14, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 93, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 95, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 96, 28))
>x : I<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 95, 15))
>I : I<T, U>, Symbol(I, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 14, 1))

function foo14(x: typeof b); // ok
>foo14 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo14, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 93, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 95, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 96, 28))
>x : { foo<T, U>(x: T, y?: U): T; }, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 96, 15))
>b : { foo<T, U>(x: T, y?: U): T; }, Symbol(b, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 25, 3))

function foo14(x: any) { }
>foo14 : { (x: I<string, number>): any; (x: { foo<T, U>(x: T, y?: U): T; }): any; }, Symbol(foo14, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 93, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 95, 37), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 96, 28))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 97, 15))

function foo15(x: I2);
>foo15 : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo15, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 97, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 99, 22), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 100, 37))
>x : I2, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 99, 15))
>I2 : I2, Symbol(I2, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 18, 1))

function foo15(x: C<string, number>); // ok
>foo15 : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo15, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 97, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 99, 22), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 100, 37))
>x : C<string, number>, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 100, 15))
>C : C<T, U>, Symbol(C, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 10, 1))

function foo15(x: any) { }
>foo15 : { (x: I2): any; (x: C<string, number>): any; }, Symbol(foo15, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 97, 26), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 99, 22), Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 100, 37))
>x : any, Symbol(x, Decl(objectTypesIdentityWithGenericCallSignaturesOptionalParams2.ts, 101, 15))