code: def get_proposals(self, index, img=None):
      if index in self._proposal_dict:
          return self._proposal_dict[index]
      else:
          num_proposals = self._proposal_cfg.NUM_ROI_PROPOSALS
          return compute_proposals(
              img, num_proposals, self._proposal_cfg
          )
  
imports: import os, sys
  import numpy
  import cv2
  from utils.rpn.bbox_transform import bbox_transform
  from utils.cython_modules.cython_bbox import bbox_overlaps
label_desc: Use image node_id 7 for calling the ProposalProvider obj's underlying member method code with example usage: obj.get_proposals(index, img) and returns: self, compute_proposals