code: def feed(self):
      self._group.feed(self._pipepline, self._data, self._batch_size)
  
imports: from nvidia.dali import backend
  from nvidia.dali import tensors
  from nvidia.dali import types
  from nvidia.dali._multiproc.messages import TaskArgs, SampleRange
  import nvidia.dali.types
  from nvidia.dali._utils.external_source_impl import get_callback_from_source, accepted_arg_count, SourceKind
label_desc: Use image node_id 2 for calling the _ExternalDataBatch obj's underlying member method code with example usage: obj.feed() without return types