(self)
Should return a list of data values, that corresponds to the
        headers.
Should return a list of data values, that corresponds to the
        headers.
Should return a list of data values that corresponds to the headers .
def data(self):
        """
        Should return a list of data values, that corresponds to the
        headers.
        """
        raise NotImplementedError("Override this function!")
def data ( self ) : raise NotImplementedError ( "Override this function!" )