text: # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
  # from ._utils import _C
  import sys
  
  import os
  sys.path.append(os.getcwd())
  from tool.roi_layers import _C
  
  nms = _C.nms
  # nms.__doc__ = """
  # This function performs Non-maximum suppresion"""
  import torch
  
  
  