code: def name(self):
      return self.__class__.__name__
  
imports: from functools import partial
  import nnabla
  import nnabla.function
  import nnabla.functions
  import numpy
  from nnabla.function import PythonFunction
  from .utils import force_tuple
label_desc: Use image node_id 2 for calling the BatchNormalizationBackward obj's underlying member method code with example usage: obj.name() and returns: self