code: def _global_variables():
      return (
          tf.global_variables()
          if not _IS_TF2
          else tf.compat.v1.global_variables()
      )
  
imports: from packaging import version
  import tensorflow
  from tensorflow.python.framework import ops
  from horovod.common.elastic import run_fn, ObjectState
  from horovod.common.exceptions import HorovodInternalError
  from horovod.tensorflow.functions import broadcast_object, broadcast_object_fn, broadcast_variables
  from horovod.tensorflow.mpi_ops import _executing_eagerly, init, rank, shutdown
label_desc: Use image node_id 5 for calling a global function with example usage: _global_variables() and returns: unknown