code: def __call__(self, start, stop):
      return core_ops.io_kafka_readable_read(
          self._resource,
          start=start,
          stop=stop,
          shape=tf.TensorShape([None]),
          dtype=tf.string,
      )
  
file_path: io/tensorflow_io/python/ops/lmdb_dataset_ops.py
imports: import sys
  import uuid
  import tensorflow
  from tensorflow_io.python.ops import core_ops
label_desc: Use image node_id 2 for calling the _LMDBIODatasetFunction obj's underlying member method code with example usage: obj.__call__(start, stop) and returns: core_ops