assertFalse(delegate.isOverridable());
    assertFalse(delegate.isVarArgs());
  }

  public void testMethod_isVarArgs() throws Exception {
    Invokable<?, ?> delegate = Prepender.method("privateVarArgsMethod", String[].class);
    assertTrue(delegate.isVarArgs());
  }

  public void testConstructor_isVarArgs() throws Exception {
    Invokable<?, ?> delegate = Prepender.constructor(String[].class);

    assertFalse(delegate.isOverridable());
    assertFalse(delegate.isVarArgs());
  }

  public void testMethod_isVarArgs() throws Exception {
    Invokable<?, ?> delegate = Prepender.method("privateVarArgsMethod", String[].class);
    assertTrue(delegate.isVarArgs());
  }

  public void testConstructor_isVarArgs() throws Exception {
    Invokable<?, ?> delegate = Prepender.constructor(String[].class);

      return !(isFinal()
          || isPrivate()
          || isStatic()
          || Modifier.isFinal(getDeclaringClass().getModifiers()));
    }

    @Override
    public final boolean isVarArgs() {
      return method.isVarArgs();
    }
  }

  static class ConstructorInvokable<T> extends Invokable<T, T> {

    final Constructor<?> constructor;

    ConstructorInvokable(Constructor<?> constructor) {