text: from argparse import ArgumentParser
  from typing import Any
  
  from zerver.lib.actions import do_rename_stream
  from zerver.lib.management import ZulipBaseCommand
  from zerver.models import get_stream
  
  
  class Command(ZulipBaseCommand):
      help = """Change the stream name for a realm."""
  
      def add_arguments(self, parser: ArgumentParser) -> None:
          parser.add_argument('old_name', metavar='<old name>',
                              help='name of stream to be renamed')
          parser.add_argument('new_name', metavar='<new name>',
                              help='new name to rename the stream to')
          self.add_realm_args(parser, True)
  
      def handle(self, *args: Any, **options: str) -> None:
          realm = self.get_realm(options)
          assert realm is not None  # Should be ensured by parser
          old_name = options['old_name']
          new_name = options['new_name']
  
          stream = get_stream(old_name, realm)
          do_rename_stream(stream, new_name, self.user_profile)
  