class Promise<T extends @Nullable Object> implements IThenable<T> {

  @JsFunction
  interface PromiseExecutorCallbackFn<T extends @Nullable Object> {
    @JsFunction
    interface ResolveCallbackFn<T extends @Nullable Object> {
      void onInvoke(T value);
    }

    @JsFunction
    interface RejectCallbackFn {
      void onInvoke(Object error);
    }

  }

  public void testAsFunction_simplistic() {
    String canonical = "a";
    String not = new String("a");

    Function<String, String> internerFunction =
        Interners.asFunction(Interners.<String>newStrongInterner());

    assertSame(canonical, internerFunction.apply(canonical));
    assertSame(canonical, internerFunction.apply(not));
  }

  public void testNullPointerExceptions() {

  }

  @Test
  @TestMetadata("function.kt")
  public void testFunction() {
    runTest("analysis/analysis-api/testData/components/typeInfoProvider/functionClassKind/function.kt");
  }

  @Test
  @TestMetadata("kFunction.kt")
  public void testKFunction() {

  }

  public void testAsFunction_simplistic() {
    String canonical = "a";
    String not = new String("a");

    Function<String, String> internerFunction =
        Interners.asFunction(Interners.<String>newStrongInterner());

    assertSame(canonical, internerFunction.apply(canonical));
    assertSame(canonical, internerFunction.apply(not));
  }

  public void testNullPointerExceptions() {