code: def _check_versions(self):
      if bz2 is None:
          raise ValueError(
              "bz2 module is not compiled on your python "
              "standard library."
          )
  
imports: import io
  import zlib
  from joblib.backports import LooseVersion
label_desc: Use image node_id 2 for calling the BZ2CompressorWrapper obj's underlying member method code with example usage: obj._check_versions() without return types