// Then
        assertFalse(verifyFailed);
        verify(response).isVerifyFailed();
    }

    @Test
    @DisplayName("Test Response interface methods - isError")
    void testIsError() {
        // Given
        when(response.isError()).thenReturn(false);

        // When
        boolean isError = response.isError();

        // Then
        assertFalse(isError);