class_docstr: A `Dataset` that maps a function over elements in its input.
code: def _transformation_name(self):
      return "Dataset.map()"
  
imports: import warnings
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.ops import debug_mode
  from tensorflow.python.data.ops import structured_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import gen_dataset_ops
label_desc: Use image node_id 4 for calling the _MapDataset obj's underlying member method code with example usage: obj._transformation_name() and returns: str