code: def testBuild(self):
      bias = bias_layer.BiasLayer()
      states = tf.ones((2, 3))
      out = bias(states)
      self.evaluate(tf.compat.v1.global_variables_initializer())
      np.testing.assert_almost_equal(
          [[1.0] * 3] * 2, self.evaluate(out)
      )
  
file_path: agents/tf_agents/keras_layers/bias_layer_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow
  from tf_agents.keras_layers import bias_layer
label_desc: Use image node_id 1 for calling the BiasLayerTest obj's underlying member method code with example usage: obj.testBuild() without return types