code: def is_compressed(data):
      return isinstance(data, bytes) or isinstance(data, str)
  
file_path: ray/python/ray/rllib/utils/compression.py
imports: from ray.rllib.utils.annotations import DeveloperAPI
  import logging
  import time
  import base64
  import numpy
  from ray import cloudpickle
label_desc: Use image node_id 6 for calling a global function with example usage: is_compressed(data) and returns: unknown