code: def __init__(self) -> None:
      self.buckets: Dict[str, Dict[str, NodeCoverage]] = {
          "loaded": defaultdict(NodeCoverage),
          "passed": defaultdict(NodeCoverage),
      }
      self.models: Dict[str, Dict[str, ModelCoverage]] = {
          "loaded": defaultdict(ModelCoverage),
          "passed": defaultdict(ModelCoverage),
      }
  
imports: import csv
  import datetime
  import os
  from collections import OrderedDict, defaultdict
  from typing import IO, Any, Dict, List, Optional, Set
  from tabulate import tabulate
  import onnx
  from onnx import GraphProto, defs, helper
label_desc: Use image node_id 1 to create a new Coverage object  with example: obj = Coverage()