buf->data = data;
  buf->length = str.length();
  buf->data_deallocator = [](void* data, size_t length) {
    tensorflow::port::Free(data);
  };
}

void TFE_ContextGetFunctionDef(TFE_Context* ctx, const char* function_name,
                               TF_Buffer* buf, TF_Status* status) {
  auto* function_def = tensorflow::unwrap(ctx)->FindFunctionDef(function_name);

TF_CAPI_EXPORT extern TFE_TensorHandle* TFE_NewCustomDeviceTensorHandle(
    TFE_Context*, const char* device_name, TF_DataType, void* data,
    TFE_CustomDeviceTensorHandle methods, TF_Status* status);

TF_CAPI_EXPORT extern void TFE_ContextGetFunctionDef(TFE_Context* ctx,
                                                     const char* function_name,
                                                     TF_Buffer* buf,