text: from ..builder import DETECTORS
  from .single_stage_seg import SingleStageSegDetector
  
  
  @DETECTORS.register_module()
  class SOLOv2(SingleStageSegDetector):
  
      def __init__(self,
                   backbone,
                   neck,
                   bbox_head,
                   mask_feat_head,
                   train_cfg=None,
                   test_cfg=None,
                   pretrained=None):
          super(SOLOv2, self).__init__(backbone, neck, bbox_head, mask_feat_head,
                                       train_cfg, test_cfg, pretrained)
  