code: def get_examples(self, indices, key_indices):
      if self._callback:
          self._callback(indices, key_indices)
  
      data = self.data
      if indices is not None:
          data = data[:, indices]
      if key_indices is not None:
          data = data[list(key_indices)]
  
      if self._return_array:
          return tuple(data)
      else:
          return tuple(list(d) for d in data)
  
file_path: chainer/tests/chainer_tests/dataset_tests/tabular_tests/dummy_dataset.py
imports: import numpy
  import chainer
  from chainer import testing
label_desc: Use image node_id 5 for calling the DummyDataset obj's underlying member method code with example usage: obj.get_examples(indices, key_indices) and returns: tuple, tuple