class_docstr: Abstract class for batch of environments inside the TensorFlow graph.
    
class_docstr_tok: ["Abstract","class","for","batch","of","environments","inside","the","TensorFlow","graph","."]
docstr: Send close messages to the external process and join them.
docstr_tok: ["Send","close","messages","to","the","external","process","and","join","them","."]
code: def close(self):
      """Send close messages to the external process and join them."""
      self._batch_env.close()
  
file_path: tensor2tensor/tensor2tensor/rl/envs/in_graph_batch_env.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gym
  import tensorflow.compat.v1
label_desc: Use image node_id 13 for calling the InGraphBatchEnv obj's underlying member method code with example usage: obj.close() without return types