code: def __init__(self, nnp):
      self._nnp = nnp
      self._functions = []
      self._variables = OrderedDict()
      self._parameters = OrderedDict()
      self._referred = set()
      self._unique_name = {}
      self._resolve_table = {"GRU": self.GRU}
  
file_path: nnabla/python/src/nnabla/utils/converter/nnablart/resolver.py
imports: from collections import OrderedDict
  import nnabla
  import nnabla.functions
  import numpy
  from nnabla.utils import nnabla_pb2
  from nnabla.utils.save_function import _create_function_nntxt
label_desc: Use image node_id 1 to create a new Resolver object  with example: obj = Resolver(nnp)