docs: def save_metadata(self, phase, data_name):
          """
          Save metadata associated with the phase, such as the name of the pipeline, the name of the phase and the name
          of the data being fit
          """
          with open("{}/.metadata".format(make_path(phase)), "w+") as f:
              f.write("pipeline={}\nphase={}\ndata={}".format(self.pipeline_name, phase.phase_name,
                                                              data_name))