code: def list_metrics():
      
      for name, operator in ALL_OPERATORS.items():
          print(f"{name} operator:")
          if len(operator.cls.metrics) > 0:
              print(
                  tabulate.tabulate(
                      headers=("Name", "Description", "Type"),
                      tabular_data=operator.cls.metrics,
                      tablefmt=DEFAULT_GRID_STYLE,
                  )
              )
docs: List metrics available.