code: def has_helper(self, helper_or_helper_name):
      helper_name = (
          helper_or_helper_name
          if isinstance(helper_or_helper_name, basestring)
          else helper_or_helper_name.__name__
      )
      return helper_name in self._registry
  
imports: import sys
  import copy
  import inspect
  from past.builtins import basestring
  from caffe2.python.model_helper import ModelHelper
  from caffe2.python.helpers.algebra import *
  from caffe2.python.helpers.arg_scope import *
  from caffe2.python.helpers.array_helpers import *
  from caffe2.python.helpers.control_ops import *
  from caffe2.python.helpers.conv import *
  from caffe2.python.helpers.db_input import *
  from caffe2.python.helpers.dropout import *
  from caffe2.python.helpers.elementwise_linear import *
  from caffe2.python.helpers.fc import *
  from caffe2.python.helpers.nonlinearity import *
  from caffe2.python.helpers.normalization import *
  from caffe2.python.helpers.pooling import *
  from caffe2.python.helpers.quantization import *
  from caffe2.python.helpers.tools import *
  from caffe2.python.helpers.train import *
label_desc: Use image node_id 4 for calling the HelperWrapper obj's underlying member method code with example usage: obj.has_helper(helper_or_helper_name) and returns: unknown