class_docstr: Contains session data for a single "user" of an active app
  (that is, a connected browser tab).
  
  Each AppSession has its own ScriptData, root DeltaGenerator, ScriptRunner,
  and widget state.
  
  An AppSession is attached to each thread involved in running its script.
class_docstr_tok: ["Contains","session","data","for","a","single","``","user","''","of","an","active","app","(","that","is",",","a","connected","browser","tab",")",".","Each","AppSession","has","its","own","ScriptData",",","root","DeltaGenerator",",","ScriptRunner",",","and","widget","state",".","An","AppSession","is","attached","to","each","thread","involved","in","running","its","script","."]
docstr: Enqueue a new ForwardMsg to our browser queue.
  
  This can be called on both the main thread and a ScriptRunner
  run thread.
  
  Parameters
  ----------
  msg : ForwardMsg
      The message to enqueue
docstr_tok: ["Enqueue","a","new","ForwardMsg","to","our","browser","queue",".","This","can","be","called","on","both","the","main","thread","and","a","ScriptRunner","run","thread",".","Parameters","--","--","--","--","--","msg",":","ForwardMsg","The","message","to","enqueue"]
code: def _enqueue_forward_msg(self, msg: ForwardMsg) -> None:
      """Enqueue a new ForwardMsg to our browser queue.
  
      This can be called on both the main thread and a ScriptRunner
      run thread.
  
      Parameters
      ----------
      msg : ForwardMsg
          The message to enqueue
  
      """
      if not config.get_option("client.displayEnabled"):
          return
  
      if self._debug_last_backmsg_id:
          msg.debug_last_backmsg_id = self._debug_last_backmsg_id
  
      self._browser_queue.enqueue(msg)
      if self._message_enqueued_callback:
          self._message_enqueued_callback()
  
imports: import asyncio
  import sys
  import uuid
  from enum import Enum
  from typing import TYPE_CHECKING, Callable, Dict, List, Optional, Union
  import streamlit.elements.exception
  from streamlit import config, runtime, source_util
  from streamlit.case_converters import to_snake_case
  from streamlit.logger import get_logger
  from streamlit.proto.BackMsg_pb2 import BackMsg
  from streamlit.proto.ClientState_pb2 import ClientState
  from streamlit.proto.Common_pb2 import FileURLs, FileURLsRequest
  from streamlit.proto.ForwardMsg_pb2 import ForwardMsg
  from streamlit.proto.GitInfo_pb2 import GitInfo
  from streamlit.proto.NewSession_pb2 import Config, CustomThemeConfig, NewSession, UserInfo
  from streamlit.proto.PagesChanged_pb2 import PagesChanged
  from streamlit.runtime import caching, legacy_caching
  from streamlit.runtime.forward_msg_queue import ForwardMsgQueue
  from streamlit.runtime.metrics_util import Installation
  from streamlit.runtime.script_data import ScriptData
  from streamlit.runtime.scriptrunner import RerunData, ScriptRunner, ScriptRunnerEvent
  from streamlit.runtime.scriptrunner.script_cache import ScriptCache
  from streamlit.runtime.secrets import secrets_singleton
  from streamlit.runtime.uploaded_file_manager import UploadedFileManager
  from streamlit.version import STREAMLIT_VERSION_STRING
  from streamlit.watcher import LocalSourcesWatcher
label_desc: Use image node_id 7 for calling the AppSession obj's underlying member method code with example usage: obj._enqueue_forward_msg(msg) without return types