docs: def do_denyaccess(self, line):
          """denyaccess <subject> Remove subject from access policy."""
          subject, = self._split_args(line, 1, 0)
          self._command_processor.get_session().get_access_control().remove_allowed_subject(
              subject
          )
          self._print_info_if_verbose(
              'Removed subject "{}" from access policy'.format(subject)
          )