private AbstractFunctionCallResult buildMockFunctionCallResult() {
   final AbstractFunctionCallResult functionCallResult = mock(AbstractFunctionCallResult.class);
   when(functionCallResult.getApplicationName()).thenReturn("test_app_name");
   when(functionCallResult.getMimeType()).thenReturn(Constants.XML_MIME_TYPE);
   when(functionCallResult.getPayload()).thenReturn("<fake />");
   return functionCallResult;
 }