class_docstr: An RNN cell base class that can implement a stack or queue.
    
class_docstr_tok: ["An","RNN","cell","base","class","that","can","implement","a","stack","or","queue","."]
docstr: Build the controller.
      
docstr_tok: ["Build","the","controller","."]
code: def build(self, _):
      """Build the controller."""
      self.build_controller()
      self.built = True
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import collections
  from tensor2tensor.layers import common_hparams
  from tensor2tensor.layers import common_layers
  from tensor2tensor.utils import contrib
  from tensor2tensor.utils import registry
  from tensor2tensor.utils import t2t_model
  import tensorflow.compat.v1
label_desc: Use image node_id 11 for calling the NeuralStackCell obj's underlying member method code with example usage: obj.build(_) without return types