code: def __init__(self, pb_model, op_resolver):
      self.net_def = pb_model
  
      self.init_output_cache()
      self.init_const_tensor_cache()
      self.init_model_input_cache()
  
file_path: mace/tools/python/micro/graph_builder.py
imports: from py_proto import micro_mem_pb2
  from utils.util import mace_check
label_desc: Use image node_id 1 to create a new GraphBuilder object  with example: obj = GraphBuilder(pb_model, op_resolver)