class_docstr: Tests the ExtendedMultiRNNCell
class_docstr_tok: ["Tests","the","ExtendedMultiRNNCell"]
code: def test_residuals_mean(self):
      self._test_constant_shape(combiner="mean")
  
file_path: seq2seq/seq2seq/test/rnn_cell_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import tensorflow
  from seq2seq.contrib import rnn_cell
  import numpy
label_desc: Use image node_id 4 for calling the ExtendedMultiRNNCellTest obj's underlying member method code with example usage: obj.test_residuals_mean() without return types