class_docstr: An intermediate representation for DL graph.
code: def __init__(self, name, node_list, version=0):
      if node_list and len(node_list):
          assert isinstance(node_list[0], Node)
          self.node_dict = {node.name: node for node in node_list}
      else:
          self.node_dict = {}
      self.name = name
      self.version = version
  
imports: import six
  from six import string_types
  from mmdnn.conversion.caffe.errors import ConversionError
  from mmdnn.conversion.common.IR.graph_pb2 import GraphDef, NodeDef, TensorShape
  from mmdnn.conversion.caffe.utils import get_real_name
label_desc: Use image node_id 1 to create a new Graph object from inherited base classes: object with example: obj = Graph(name, node_list, version)