virtual bool updateDataNeeds(const std::vector< const DataObjID * > &input_data_in, const std::vector< const DataObjID * > &output_data_in, std::vector< Gaudi::DataHandle * > &new_input_handles, std::vector< Gaudi::DataHandle * > &new_output_handles)=0
Inform a dynamic data consumer about all consumed or produced data.