code: def test_missing_arg1(self):
      x = tf.constant(1)
      with self.assertRaises(TypeError):
          ps.cond(True, false_fn=lambda: x)
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import prefer_static
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 3 for calling the CondTest obj's underlying member method code with example usage: obj.test_missing_arg1() without return types