code: def __init__(self, pb_model, model_conf):
      self.net_def = pb_model
      self.op_desc_map = {}
      self.op_desc_list = []
  
      self.backend = None
      if "micro" in model_conf:
          if "backend" in model_conf["micro"]:
              self.backend = model_conf["micro"]["backend"]
  
file_path: mace/tools/python/micro/micro_support_ops.py
imports: import copy
  from enum import Enum
  from py_proto import mace_pb2
  from transform.base_converter import MaceKeyword
  from transform.base_converter import MaceOp
  from utils.config_parser import DataFormat
  from utils.config_parser import ModelKeys
  from utils.config_parser import Platform
  from utils.util import mace_check
  from micro.micro_op_resolver_rules import RefOPSResolverRules
  from micro.micro_op_resolver_rules import OptOPSResolverRules
  from micro.micro_op_resolver_cmsis_rules import CmsisOPSResolverRules
  from micro.micro_op_resolver_xtensa_rules import XtensaOPSResolverRules
label_desc: Use image node_id 1 to create a new OpResolver object  with example: obj = OpResolver(pb_model, model_conf)