class_docstr: DataLoaderTransformers are used to transform the output of a DataLoader.
  DataLoader doesn't have easy access to the device or graph, so any
  computation that should happen there should use a DataLoaderTransformer.
code: def __getattr__(self, key):
      return getattr(self.dataloader, key)
  
imports: from __future__ import division
  import numpy
  from neon import NervanaObject
label_desc: Use image node_id 2 for calling the DataLoaderTransformer obj's underlying member method code with example usage: obj.__getattr__(key) and returns: getattr