Retrieve file data from the Key, and return contents as a string.

        :type headers: dict
        :param headers: ignored in this subclass.

        :type cb: function
        :param cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.

        :type torrent: bool
        :param torrent: ignored in this subclass.

        :rtype: string
        :returns: The contents of the file as a string

def get_contents_as_string(self, headers=None, cb=None, num_cb=10,
                               torrent=False):
        """
        Retrieve file data from the Key, and return contents as a string.

        :type headers: dict
        :param headers: ignored in this subclass.

        :type cb: function
        :param cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.

        :type cb: int
        :param num_cb: ignored in this subclass.

        :type torrent: bool
        :param torrent: ignored in this subclass.

        :rtype: string
        :returns: The contents of the file as a string
        """

        fp = StringIO.StringIO()
        self.get_contents_to_file(fp)
        return fp.getvalue()