code: def set_pipeline(self, pipeline):
          
          self.add_history(inspect.stack()[0][3], locals(), 1)
          if not os.path.exists(self.BIDS_dir + '/derivatives/' + pipeline):
              print('Specified direvative directory not found.')
              self.get_pipeline_alternatives()
          else:
              # Todo: perform check that pipeline is valid
              self.pipeline = pipeline
docs: Specify the pipeline. See get_pipeline_alternatives to see what are avaialble. Input should be a string.