docs: def add_isoquant_data(proteins, quantproteins, quantacc, quantfields):
      """Runs through a protein table and adds quant data from ANOTHER protein
      table that contains that data."""
      for protein in base_add_isoquant_data(proteins, quantproteins,
                                            prottabledata.HEADER_PROTEIN,
                                            quantacc, quantfields):
          yield protein