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=back

  /* From <tensorflow/c/experimental/grappler/grappler.h> */
  TF_CAPI_EXPORT extern void TF_DeleteFunctionLibraryDefinition(
      TF_FunctionLibraryDefinition* fn_lib);

=head2 TF_LookUpOpDef

=over 2

  Shorthand for calling LookUp to get the OpDef from FunctionLibraryDefinition
  given op name. The returned OpDef is represented by TF_Buffer.

=back

  /* From <tensorflow/c/experimental/grappler/grappler.h> */
  TF_CAPI_EXPORT extern void TF_LookUpOpDef(TF_FunctionLibraryDefinition* fn_lib,
                                            const char* name, TF_Buffer* buf,
                                            TF_Status* s);

=head2 TF_TensorSpecDataType

=over 2

  Returns the dtype associated with the TensorSpec.

=back

  /* From <tensorflow/c/experimental/saved_model/public/tensor_spec.h> */
  TF_CAPI_EXPORT extern TF_DataType TF_TensorSpecDataType(
      const TF_TensorSpec* spec);

=head2 TF_TensorSpecShape

=over 2

  Returns the shape associated with the TensorSpec. The returned Shape is not
  owned by the caller. Caller must not call TF_DeleteShape on the returned
  shape.

=back

  /* From <tensorflow/c/experimental/saved_model/public/tensor_spec.h> */
  TF_CAPI_EXPORT extern const TF_Shape* TF_TensorSpecShape(
      const TF_TensorSpec* spec);

=head2 TF_InitPlugin

=over 2

  /// Initializes a TensorFlow plugin.
  ///
  /// Must be implemented by the plugin DSO. It is called by TensorFlow runtime.
  ///
  /// Filesystem plugins can be loaded on demand by users via
  /// `Env::LoadLibrary` or during TensorFlow's startup if they are on certain
  /// paths (although this has a security risk if two plugins register for the
  /// same filesystem and the malicious one loads before the legimitate one -
  /// but we consider this to be something that users should care about and
  /// manage themselves). In both of these cases, core TensorFlow looks for
  /// the `TF_InitPlugin` symbol and calls this function.
  ///
  /// For every filesystem URI scheme that this plugin supports, the plugin must
  /// add one `TF_FilesystemPluginInfo` entry in `plugin_info->ops` and call
  /// `TF_SetFilesystemVersionMetadata` for that entry.
  ///
  /// Plugins must also initialize `plugin_info->plugin_memory_allocate` and
  /// `plugin_info->plugin_memory_free` to ensure memory allocated by plugin is
  /// freed in a compatible way.

=back

  /* From <tensorflow/c/experimental/filesystem/filesystem_interface.h> */
  TF_CAPI_EXPORT extern void TF_InitPlugin(TF_FilesystemPluginInfo* plugin_info);

=head2 TF_LoadSavedModel

=over 2

  Load a SavedModel from `dirname`. We expect the SavedModel to contain a
  single Metagraph (as for those exported from TF2's `tf.saved_model.save`).
  
  Params:
   dirname - A directory filepath that the SavedModel is at.
   ctx - A TFE_Context containing optional load/TF runtime options.
         `ctx` must outlive the returned TF_SavedModel pointer.
   status - Set to OK on success and an appropriate error on failure.
  Returns:
   If status is not OK, returns nullptr. Otherwise, returns a newly created
   TF_SavedModel instance. It must be deleted by calling TF_DeleteSavedModel.

=back

  /* From <tensorflow/c/experimental/saved_model/public/saved_model_api.h> */
  TF_CAPI_EXPORT extern TF_SavedModel* TF_LoadSavedModel(const char* dirname,
                                                         TFE_Context* ctx,
                                                         TF_Status* status);

=head2 TF_LoadSavedModelWithTags

=over 2

  Load a SavedModel from `dirname`.
  
  Params:
   dirname - A directory filepath that the SavedModel is at.
   ctx - A TFE_Context containing optional load/TF runtime options.
         `ctx` must outlive the returned TF_SavedModel pointer.
   tags - char* array of SavedModel tags. We will load the metagraph matching
          the tags.
   tags_len - number of elements in the `tags` array.
   status - Set to OK on success and an appropriate error on failure.
  Returns:
   If status is not OK, returns nullptr. Otherwise, returns a newly created
   TF_SavedModel instance. It must be deleted by calling TF_DeleteSavedModel.

=back

  /* From <tensorflow/c/experimental/saved_model/public/saved_model_api.h> */
  TF_CAPI_EXPORT extern TF_SavedModel* TF_LoadSavedModelWithTags(