code: def test_multiplier(self):
      ones_initializer = lambda s, d: tf.ones(s, dtype=d)
      mod = bias.Bias(b_init=ones_initializer)
      out = mod(tf.ones([1, 1]), multiplier=-1)
      self.assertAllEqual(tf.reduce_sum(out), 0)
  
file_path: sonnet/sonnet/src/bias_test.py
imports: from sonnet.src import bias
  from sonnet.src import test_utils
  import tensorflow
label_desc: Use image node_id 10 for calling the BiasTest obj's underlying member method code with example usage: obj.test_multiplier() without return types