code: def setUp(self):
      super(TransformerLayersTest, self).setUp()
      self.converter = test_utils.NumpyConverter()
  
imports: import collections
  import mesh_tensorflow
  from mesh_tensorflow import test_utils
  from mesh_tensorflow.transformer import transformer
  from mesh_tensorflow.transformer import transformer_layers
  import mock
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the TransformerLayersTest obj's underlying member method code with example usage: obj.setUp() without return types