class_docstr: ParquetIODataset
code: def _inputs(self):
      return []
  
file_path: io/tensorflow_io/python/ops/parquet_dataset_ops.py
imports: import collections
  import tensorflow
  from tensorflow_io.python.ops import core_ops
label_desc: Use image node_id 2 for calling the ParquetIODataset obj's underlying member method code with example usage: obj._inputs() and returns: list