code: def test_prefix_meta():
      # Test the prefix-meta command.
      def setup_keybindings(cli):
          from prompt_toolkit.key_binding.bindings.named_commands import (
              prefix_meta,
          )
          from prompt_toolkit.filters import ViInsertMode
  
          cli.application.key_bindings_registry.add_binding(
              "j", "j", filter=ViInsertMode()
          )(prefix_meta)
  
      result, cli = _feed_cli_with_input(
          "hellojjIX\n",
          pre_run_callback=setup_keybindings,
          editing_mode=EditingMode.VI,
      )
      assert result.text == "Xhello"
  
imports: from __future__ import unicode_literals
  from prompt_toolkit.application import Application
  from prompt_toolkit.buffer import Buffer, AcceptAction
  from prompt_toolkit.clipboard import InMemoryClipboard, ClipboardData
  from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode
  from prompt_toolkit.eventloop.posix import PosixEventLoop
  from prompt_toolkit.history import InMemoryHistory
  from prompt_toolkit.input import PipeInput
  from prompt_toolkit.interface import CommandLineInterface
  from prompt_toolkit.key_binding.manager import KeyBindingManager
  from prompt_toolkit.output import DummyOutput
  from prompt_toolkit.terminal.vt100_input import ANSI_SEQUENCES
  from functools import partial
  import pytest
label_desc: Use image node_id 17 for calling a global function with example usage: test_prefix_meta() without return types