@Test
public void handleInterfaceAnnotationShouldMergePlaceholdersAndFillMethodsProducesWithFirstAnnotationValue() throws Exception {

    when(mockAnnotation.value()).thenReturn(new String[]{VAL_WITH_PH + "a", VAL_WITH_PH + "b"});
    when(mockInterfaceConfigBuilder.setMethodsProduces(EXPECTED_MERGE_VAL + "a")).thenReturn(mockInterfaceConfigBuilder);
    toTest.handleInterfaceAnnotation(mockAnnotation, mockInterfaceConfigBuilder);
    verify(mockAnnotation, times(2)).value();
    verify(mockInterfaceConfigBuilder).setMethodsProduces(EXPECTED_MERGE_VAL + "a");
}