code: def test_varargs_varkwargs_to_call(self):
      layer1 = lambda a, b, c: ((a + b + c), (c + b + a))
      layer2 = lambda a: a[0] + "," + a[1]
      net = sequential.Sequential([layer1, layer2])
      self.assertEqual(net("a", "b", c="c"), "abc,cba")
  
file_path: sonnet/sonnet/src/sequential_test.py
imports: from absl.testing import parameterized
  from sonnet.src import sequential
  from sonnet.src import test_utils
  import tensorflow
label_desc: Use image node_id 5 for calling the SequentialTest obj's underlying member method code with example usage: obj.test_varargs_varkwargs_to_call() without return types