// IO management
std::set< std::string > GetInputsNames( ) const;
std::set< std::string > GetOutputsNames( ) const;
unsigned int GetNumberOfInputs( ) const;
unsigned int GetNumberOfOutputs( ) const;
// IO management
std::set< std::string > GetInputsNames( ) const;
std::set< std::string > GetOutputsNames( ) const;
unsigned int GetNumberOfInputs( ) const;
unsigned int GetNumberOfOutputs( ) const;