=== tests/cases/compiler/functionOverloads7.ts ===
class foo { 
>foo : foo, Symbol(foo, Decl(functionOverloads7.ts, 0, 0))

   private bar();
>bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))

   private bar(foo: string);
>bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))
>foo : string, Symbol(foo, Decl(functionOverloads7.ts, 2, 15))

   private bar(foo?: any){ return "foo" }
>bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))
>foo : any, Symbol(foo, Decl(functionOverloads7.ts, 3, 15))
>"foo" : string

   public n() {
>n : () => void, Symbol(n, Decl(functionOverloads7.ts, 3, 41))

     var foo = this.bar();
>foo : any, Symbol(foo, Decl(functionOverloads7.ts, 5, 8))
>this.bar() : any
>this.bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))
>this : foo, Symbol(foo, Decl(functionOverloads7.ts, 0, 0))
>bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))

     foo = this.bar("test");
>foo = this.bar("test") : any
>foo : any, Symbol(foo, Decl(functionOverloads7.ts, 5, 8))
>this.bar("test") : any
>this.bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))
>this : foo, Symbol(foo, Decl(functionOverloads7.ts, 0, 0))
>bar : { (): any; (foo: string): any; }, Symbol(bar, Decl(functionOverloads7.ts, 0, 11), Decl(functionOverloads7.ts, 1, 17), Decl(functionOverloads7.ts, 2, 28))
>"test" : string
   }
}