TF_CAPI_EXPORT extern TF_ImportGraphDefOptions* TF_NewImportGraphDefOptions(
    void);
TF_CAPI_EXPORT extern void TF_DeleteImportGraphDefOptions(
    TF_ImportGraphDefOptions* opts);

// Set the prefix to be prepended to the names of nodes in `graph_def` that will
// be imported into `graph`. `prefix` is copied and has no lifetime
// requirements.
TF_CAPI_EXPORT extern void TF_ImportGraphDefOptionsSetPrefix(