code: def block_until_ready(tensors):
      """Blocks computation until it is ready.
  
      Does nothing on the TensorFlow backend, as the computation is eagerly
      computed.
  
      Args:
        tensors: A nest of Tensors.
  
      Returns:
        tensors: Tensors that are are guaranteed to be ready to materialize.
      """
      return tensors
  
imports: import functools
  import numpy
  import six
  import tensorflow.compat.v2
  from tensorflow.python.util import nest
label_desc: Use image node_id 19 for calling a global function with example usage: block_until_ready(tensors) and returns: tensors