get_default_graph does not work with either eager execution or
tf.function, and you should not invoke it directly. To migrate code that
uses Graph-related functions to TF2, rewrite the code without them. See the
migration guide for more
description about the behavior and semantic changes between Tensorflow 1 and
Tensorflow 2.
Description
The returned graph will be the innermost graph on which a
Graph.as_default() context has been entered, or a global default
graph if none has been explicitly created.
Returns
The default Graph being used in the current thread.