code: def show_vcs_output_principal_switch_wwn(self, **kwargs):
          
          config = ET.Element("config")
          show_vcs = ET.Element("show_vcs")
          config = show_vcs
          output = ET.SubElement(show_vcs, "output")
          principal_switch_wwn = ET.SubElement(output, "principal-switch-wwn")
          principal_switch_wwn.text = kwargs.pop('principal_switch_wwn')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code