code: def initialize(self, asyncio_loop, close_loop=False, **kwargs):
      super(BaseAsyncIOLoop, self).initialize(**kwargs)
      self.asyncio_loop = asyncio_loop
      self.close_loop = close_loop
      # Maps fd to (fileobj, handler function) pair (as in IOLoop.add_handler)
      self.handlers = {}
      # Set of fds listening for reads/writes
      self.readers = set()
      self.writers = set()
      self.closing = False
  
imports: from __future__ import absolute_import, division, print_function
  import functools
  import tornado.concurrent
  from tornado.gen import convert_yielded
  from tornado.ioloop import IOLoop
  from tornado import stack_context
label_desc: Use image node_id 1 for calling the BaseAsyncIOLoop obj's underlying member method code with example usage: obj.initialize(asyncio_loop, close_loop) without return types