class_docstr: A helper class for handling Relay expression copying from pb2.GraphProto.
  Definition: https://github.com/pytorch/pytorch/blob/master/caffe2/proto/caffe2.proto
class_docstr_tok: ["A","helper","class","for","handling","Relay","expression","copying","from","pb2.GraphProto",".","Definition",":","https",":","\/\/github.com\/pytorch\/pytorch\/blob\/master\/caffe2\/proto\/caffe2.proto"]
code: def __init__(self, shape, dtype):
      self._nodes = {}
      self._params = {}
      self._visited_nodes = set()
      self._ops = {}
      self._shape = shape
      self._dtype = dtype
      self._mod = IRModule({})
  
imports: import tvm
  from tvm.ir import IRModule
  from ..None import analysis
  from ..None import expr
  from ..None import function
  from ..None import op
  from ...None import nd
  from .common import AttrCvt, Renamer
  from .common import get_relay_op, new_var, infer_channels
label_desc: Use image node_id 1 to create a new Caffe2NetDef object from inherited base classes: object with example: obj = Caffe2NetDef(shape, dtype)