Testing Utilities
assert_is_bbox
assert_is_bbox_dataset
assert_is_detection_link
assert_is_image
assert_is_instance_segmentation_dataset
assert_is_label_dataset
assert_is_point
assert_is_point_dataset
assert_is_semantic_segmentation_dataset
assert_is_semantic_segmentation_link
ConstantStubLink
generate_random_bbox