code: def get_session_id():
      """
      Returns the sessionId for finding sessionstate of workers, or None if Comms
      is not initialized.
      """
      if is_initialized():
          global __instance
          return __instance.sessionId
  
file_path: cugraph/python/cugraph/cugraph/dask/comms/comms.py
imports: from cugraph.dask.common.read_utils import MissingUCXPy
  from pylibraft.common.handle import Handle
  from cugraph.dask.comms.comms_wrapper import init_subcomms
  from dask.distributed import default_client, get_worker
  from cugraph.dask.common import read_utils
  import math
label_desc: Use image node_id 8 for calling a global function with example usage: get_session_id() and returns: __instance