int ProcessRequest(vtkInformation* request, vtkInformationVector** inputVector, vtkInformationVector* outputVector);
virtual int RequestData( vtkInformation* request, vtkInformationVector** inInfo, vtkInformationVector* outInfo );
int ProcessRequest(vtkInformation* request, vtkInformationVector** inputVector, vtkInformationVector* outputVector);
virtual int RequestData( vtkInformation* request, vtkInformationVector** inInfo, vtkInformationVector* outInfo );