==== tests/cases/compiler/collisionSuperAndLocalFunctionInMethod.ts (2 errors) ====
    function _super() { // No error
    } 
    class Foo {
        x() {
            function _super() { // No error
            } 
        }
        _super() { // No error
        }
    }
    class b extends Foo {
        public foo() {
            function _super() { // should be error
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            } 
    ~~~~~~~~~
!!! Duplicate identifier '_super'. Compiler uses '_super' to capture base class reference.
        }
        _super() { // No Error
        }
    }
    class c extends Foo {
        public foo() {
            var x = () => {
                function _super() { // should be error
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                } 
    ~~~~~~~~~~~~~
!!! Duplicate identifier '_super'. Compiler uses '_super' to capture base class reference.
            }
        }
        _super() { // No error
        }
    }