def __repr__(self):
return "<STR_LIT>" % (<EOL>self.__class__.__name__,<EOL>class_repr(self.source)<EOL>)<EOL>
String representation of a ``Source`` instance.

        Returns
        -------
        str
            The string representation of the current ``Source`` instance.

        Example
        -------

        >>> from datetime import date
        >>> Source(date)
        <Source 'datetime.date'>