code: def from_cli_multi_ifos(opt, length_dict, delta_f_dict,
                          low_frequency_cutoff_dict, ifos, strain_dict=None,
                          **kwargs):
      
      psd = {}
      for ifo in ifos:
          if strain_dict is not None:
              strain = strain_dict[ifo]
          else:
              strain = None
          psd[ifo] = from_cli_single_ifo(opt, length_dict[ifo], delta_f_dict[ifo],
                                         low_frequency_cutoff_dict[ifo], ifo,
                                         strain=strain, **kwargs)
      return psd
docs: Get the PSD for all ifos when using the multi-detector CLI