class_docstr: Provide a mechanism for Bokeh applications to build up new Bokeh
  Documents.
class_docstr_tok: ["Provide","a","mechanism","for","Bokeh","applications","to","build","up","new","Bokeh","Documents","."]
docstr: Returns a default URL path, if applicable.
  
  Handlers subclasses may optionally implement this method, to inform
  the Bokeh application what URL it should be installed at.
  
  If multiple handlers specify ``url_path`` the Application will use the
  value from the first handler in its list of handlers.
docstr_tok: ["Returns","a","default","URL","path",",","if","applicable",".","Handlers","subclasses","may","optionally","implement","this","method",",","to","inform","the","Bokeh","application","what","URL","it","should","be","installed","at",".","If","multiple","handlers","specify","``","url_path","``","the","Application","will","use","the","value","from","the","first","handler","in","its","list","of","handlers","."]
code: def url_path(self) -> str | None:
      """Returns a default URL path, if applicable.
  
      Handlers subclasses may optionally implement this method, to inform
      the Bokeh application what URL it should be installed at.
  
      If multiple handlers specify ``url_path`` the Application will use the
      value from the first handler in its list of handlers.
  
      """
      return None
  
imports: from __future__ import annotations
  import logging
  import os
  import sys
  import traceback
  from typing import TYPE_CHECKING, Any
  from ...document import Document
  from ..application import ServerContext, SessionContext
label_desc: Use image node_id 11 for calling the Handler obj's underlying member method code with example usage: obj.url_path() and returns: None