class_docstr: Represent a callback to execute once on the ``IOLoop`` after a specified
  time interval passes.
class_docstr_tok: ["Represent","a","callback","to","execute","once","on","the","``","IOLoop","``","after","a","specified","time","interval","passes","."]
docstr: The timeout (in milliseconds) that the callback should run after.
  
          
docstr_tok: ["The","timeout","(","in","milliseconds",")","that","the","callback","should","run","after","."]
code: def timeout(self) -> int:
      """The timeout (in milliseconds) that the callback should run after."""
      return self._timeout
  
imports: from __future__ import annotations
  import logging
  from typing import TYPE_CHECKING, Callable, Sequence
  from ..core.types import ID
  from ..util.tornado import _CallbackGroup
label_desc: Use image node_id 2 for calling the TimeoutCallback obj's underlying member method code with example usage: obj.timeout() and returns: self