code: def _is_autocomplete_valid(cur_commands, alias_command):
      
      parent_command = ' '.join(cur_commands[1:])
      with open(GLOBAL_ALIAS_TAB_COMP_TABLE_PATH, 'r') as tab_completion_table_file:
          try:
              tab_completion_table = json.loads(tab_completion_table_file.read())
              return alias_command in tab_completion_table and parent_command in tab_completion_table[alias_command]
          except Exception:  # pylint: disable=broad-except
              return False
docs: Determine whether autocomplete can be performed at the current state.
  
      Args:
          parser: The current CLI parser.
          cur_commands: The current commands typed in the console.
          alias_command: The alias command.
  
      Returns:
          True if autocomplete can be performed.