code: def _width(self):
      return fragment_list_width(self.in_prompt_tokens())
  
imports: from pygments.token import Token
  import sys
  from IPython.core.displayhook import DisplayHook
  from prompt_toolkit.formatted_text import fragment_list_width, PygmentsTokens
  from prompt_toolkit.shortcuts import print_formatted_text
  from prompt_toolkit.enums import EditingMode
label_desc: Use image node_id 5 for calling the Prompts obj's underlying member method code with example usage: obj._width() and returns: fragment_list_width