code: def wait_for(self, predicate, timeout=None):
      result = predicate()
      if result:
          return result
      if timeout is not None:
          endtime = time.monotonic() + timeout
      else:
          endtime = None
          waittime = None
      while not result:
          if endtime is not None:
              waittime = endtime - time.monotonic()
              if waittime <= 0:
                  break
          self.wait(waittime)
          result = predicate()
      return result
  
imports: import threading
  import sys
  import tempfile
  import _multiprocessing
  import time
  from .None import context
  from .None import process
  from .None import util
label_desc: Use image node_id 11 for calling the Condition obj's underlying member method code with example usage: obj.wait_for(predicate, timeout) and returns: result, result