class_docstr: Lazy load DatasetBuilder from given name from legacy locations.
code: def _get_builder_cls(self):
      cls = object.__getattribute__(self, "_dataset_cls")
      if not cls:
          builder_name = object.__getattribute__(self, "_dataset_name")
          logging.warning(
              (
                  "DEPRECATED! Do not use a DatasetBuilder class directly, but"
                  " call `tfds.builder_cls('%s')`."
              ),
              builder_name,
          )
          cls = registered.imported_builder_cls(builder_name)
          object.__setattr__(self, "_dataset_cls", cls)
      return cls
  
imports: from typing import Text
  from absl import logging
  from tensorflow_datasets.core import registered
label_desc: Use image node_id 2 for calling the LazyBuilderImport obj's underlying member method code with example usage: obj._get_builder_cls() and returns: cls