docs: def _resize_port_models_list(port_models, rel_pos_key, factor, gaphas_editor=True):
      """ Resize relative positions a list of (data or logical) port models """
      for port_m in port_models:
          old_rel_pos = port_m.get_meta_data_editor(for_gaphas=gaphas_editor)[rel_pos_key]
          port_m.set_meta_data_editor(rel_pos_key, mult_two_vectors(factor, old_rel_pos), from_gaphas=gaphas_editor)