import abc
import collections
import functools
import numpy as np
import tensorflow.compat.v1 as tf
import tensorflow.compat.v2 as tf2

from object_detection.core import box_list
from object_detection.core import box_list_ops
from object_detection.core import keypoint_ops
from object_detection.core import model
from object_detection.core import standard_fields as fields
from object_detection.core import target_assigner as cn_assigner
from object_detection.utils import shape_utils


class DETRMetaArch(model.DetectionModel):
    def __init__():

    