class_docstr: Lazy load DatasetBuilder from given name from legacy locations.
code: def __init__(self, dataset_name: Text):
      object.__setattr__(self, "_dataset_name", dataset_name)
      object.__setattr__(self, "_dataset_cls", None)
  
imports: from typing import Text
  from absl import logging
  from tensorflow_datasets.core import registered
label_desc: Use image node_id 1 to create a new LazyBuilderImport object  with example: obj = LazyBuilderImport(dataset_name)