namespace validate {
// global functions
template <class TShape>
bool scalar(const TShape& shape);
template <class TShape>
bool scalar_or_1d_tensor_with_1_element(const TShape& shape);
template <class TShape>
void boxes_shape(
const Node \*const op,
const std::vector<TShape>& input_shapes
);
template <class TShape>
void scores_shape(
const Node \*const op,
const std::vector<TShape>& input_shapes
);
template <class TShape>
void num_batches(
const Node \*const op,
const std::vector<TShape>& input_shapes
);
template <class TShape>
void num_boxes(
const Node \*const op,
const std::vector<TShape>& input_shapes
);
template <class TShape>
void boxes_last_dim(
const Node \*const op,
const std::vector<TShape>& input_shapes
);
template <class T>
void shapes(
const Node \* op,
const std::vector<T>& input_shapes
);
} // namespace validate