code: def set_expecter(self, expecter):
      self.expecter = expecter
      self.fut = asyncio.Future()
  
file_path: catboost/contrib/python/pexpect/py3/pexpect/_async_w_await.py
imports: import asyncio
  import errno
  import signal
  from sys import version_info
  from pexpect import EOF
label_desc: Use image node_id 1 for calling the PatternWaiter obj's underlying member method code with example usage: obj.set_expecter(expecter) without return types