@property
def tsv():
    """A TSV representation of the :class:`Dataset` object. The top row will contain
        headers, if they have been set. Otherwise, the top row will contain
        the first row of the dataset.

        A dataset object can also be imported by setting the :class:`Dataset.tsv` attribute. ::

            data = tablib.Dataset()
            data.tsv = 'age	first_name	last_name\\n90	John	Adams'

        Import assumes (for now) that headers exist.
        """
    pass
