text: from .two_stage_3d_parcel import TwoStageDetector3DParcel
  from ..registry import DETECTORS
  
  
  @DETECTORS.register_module
  class MaskRCNN3DParcel(TwoStageDetector3DParcel):
  
      def __init__(self,
                   backbone,
                   rpn_head,
                   bbox_roi_extractor,
                   bbox_head,
                   mask_roi_extractor,
                   mask_head,
                   train_cfg,
                   test_cfg,
                   neck=None,
                   shared_head=None,
                   pretrained=None):
          super(MaskRCNN3DParcel, self).__init__(
              backbone=backbone,
              neck=neck,
              shared_head=shared_head,
              rpn_head=rpn_head,
              bbox_roi_extractor=bbox_roi_extractor,
              bbox_head=bbox_head,
              mask_roi_extractor=mask_roi_extractor,
              mask_head=mask_head,
              train_cfg=train_cfg,
              test_cfg=test_cfg,
              pretrained=pretrained)
  