// TF_ExtendGraph(). This deprecated API can be removed at any time without
// notice.

typedef struct TF_DeprecatedSession TF_DeprecatedSession;

TF_CAPI_EXPORT extern TF_DeprecatedSession* TF_NewDeprecatedSession(
    const TF_SessionOptions*, TF_Status* status);
TF_CAPI_EXPORT extern void TF_CloseDeprecatedSession(TF_DeprecatedSession*,
                                                     TF_Status* status);

// Internal structures used by the C API. These are likely to change and should
// not be depended on.

struct TF_SessionOptions {
  tensorflow::SessionOptions options;
};

struct TF_DeprecatedSession {
  tensorflow::Session* session;
};

struct TF_Library {
  void* lib_handle;
  TF_Buffer op_list;
};

struct TF_Graph {
  TF_Graph();

  mutable tensorflow::mutex mu;

*   The C API type `TF_SessionWithGraph` has been renamed to `TF_Session`,
    indicating its preferred use in language bindings for TensorFlow. What was
    previously `TF_Session` has been renamed to `TF_DeprecatedSession`.
*   Renamed `TF_Port` to `TF_Output` in the C API.
*   Removes RegisterShape from public API. Use C++ shape function registration
    instead. indexing now starts from 1 instead of 0, and `bus_id==0` is used