code: def run(self):
      sleep(self.delay)
      self.promise.do_resolve(self.value)
  
imports: from time import sleep
  from pytest import raises, fixture
  from threading import Event
  from promise import Promise, is_thenable, promisify, promise_for_dict
  from concurrent.futures import Future
  from threading import Thread
  from .utils import assert_exception
label_desc: Use image node_id 2 for calling the DelayedFulfill obj's underlying member method code with example usage: obj.run() without return types