code: def test_method(self):
      decorator_utils.validate_callable(self.test_method, "test")
  
imports: import functools
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import decorator_utils
label_desc: Use image node_id 2 for calling the ValidateCallableTest obj's underlying member method code with example usage: obj.test_method() without return types