code: def cmd_list_identities(self, *args):
          '''List the available identities to use for signing.
          '''
          identities = self._get_available_identities()
          print('Available identities:')
          for x in identities:
              print('  - {}'.format(x)f cmd_list_identities(self, *args):
          '''List the available identities to use for signing.
          '''
          identities = self._get_available_identities()
          print('Available identities:')
          for x in identities:
              print('  - {}'.format(x))
docs: List the available identities to use for signing.