code: def __getitem__(self, args):
      if isinstance(args, tuple):
          indices, keys = args
      else:
          indices = args
          keys = None
  
      return _Slice(self._dataset, indices, keys)
  
imports: import numbers
  import numpy
  import six
  from chainer.dataset.tabular import tabular_dataset
label_desc: Use image node_id 2 for calling the _SliceHelper obj's underlying member method code with example usage: obj.__getitem__(args) and returns: _Slice