class_docstr: Base class for TF callables like those created by tf.function.
  
  Note: Callables are conceptually very similar to `tf.Operation`: a
  `tf.Operation` is a kind of callable.
docstr: Returns a FunctionType describing this callable.
docstr_tok: ["Returns","a","FunctionType","describing","this","callable","."]
code: def function_type(self) -> FunctionType:
      """Returns a FunctionType describing this callable."""
  
imports: import abc
  import inspect
  import sys
  import textwrap
  from typing import Union
  import numpy
  from tensorflow.python.types import doc_typealias
  from tensorflow.python import pywrap_tensorflow
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 1 for calling the Callable obj's underlying member method code with example usage: obj.function_type() without return types