code: def setUp(self) -> None:
      self.drrg_head = DRRGHead(in_channels=10)
  
imports: from unittest import TestCase, mock
  import numpy
  import torch
  from mmocr.models.textdet.heads.drrg_head import GCN, DRRGHead, LocalGraphs, ProposalLocalGraphs, feature_embedding, normalize_adjacent_matrix
label_desc: Use image node_id 1 for calling the TestDRRGHead obj's underlying member method code with example usage: obj.setUp() without return types