code: def convert(self, data):
      return self._datasets[0].convert(data)
  
file_path: chainer/chainer/dataset/tabular/_concat.py
imports: import six
  from chainer.dataset.tabular import tabular_dataset
label_desc: Use image node_id 6 for calling the _Concat obj's underlying member method code with example usage: obj.convert(data) and returns: self