def schema_valid(self):
if self.xmlschema is not None:<EOL><INDENT>self.xmlschema._clear_error_log()<EOL>return self.xmlschema.validate(self.node)<EOL><DEDENT>else:<EOL><INDENT>raise Exception('<STR_LIT>')<EOL><DEDENT>
Determine if the current document is schema-valid according to the
        configured XSD Schema associated with this instance of :class:`XmlObject`.

        :rtype: boolean
        :raises: Exception if no XSD schema is defined for this XmlObject instance