Recover the last annotated SFrame.
        
        If you annotate an SFrame and forget to assign it to a variable, this
        function allows you to recover the last annotated SFrame.
        
        Returns
        -------

        out : SFrame
            A new SFrame that contains the recovered annotation data.

        Examples
        --------
        
        >> annotations = tc.image_classifier.recover_annotation()
        >> print(annotations)

        Columns:
            images  Image
            labels  int
            annotations str

        Rows: 400

        Data:
        +----------------------+-------------+
        |        images        | annotations |
        +----------------------+-------------+
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Dog     |
        | Height: 28 Width: 28 |    Mouse    |
        | Height: 28 Width: 28 |   Feather   |
        | Height: 28 Width: 28 |     Bird    |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Dog     |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Bird    |
        +----------------------+-------------+
        [400 rows x 3 columns]

def recover_annotation():
    """
        Recover the last annotated SFrame.
        
        If you annotate an SFrame and forget to assign it to a variable, this
        function allows you to recover the last annotated SFrame.
        
        Returns
        -------

        out : SFrame
            A new SFrame that contains the recovered annotation data.

        Examples
        --------
        
        >> annotations = tc.image_classifier.recover_annotation()
        >> print(annotations)

        Columns:
            images  Image
            labels  int
            annotations str

        Rows: 400

        Data:
        +----------------------+-------------+
        |        images        | annotations |
        +----------------------+-------------+
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Dog     |
        | Height: 28 Width: 28 |    Mouse    |
        | Height: 28 Width: 28 |   Feather   |
        | Height: 28 Width: 28 |     Bird    |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Dog     |
        | Height: 28 Width: 28 |     Cat     |
        | Height: 28 Width: 28 |     Bird    |
        +----------------------+-------------+
        [400 rows x 3 columns]

    """

    empty_instance = __tc.extensions.ImageClassification()
    annotation_wrapper = empty_instance.get_annotation_registry()

    return annotation_wrapper.annotation_sframe