**Helper method:** Given a Clark's Notation
        `{url:schema}Element` element, return the
        valid xpath on your xsd file, frequently
        it is not necesary overwrite this method but
        different xsd from different source
        can have different logic which I do not know now,
        then simply take this as an example and set the
        correct xpath conversion in your project.

        :param str element: Element string following the Clark's Notation

def get_element_from_clark(self, element):
        """**Helper method:** Given a Clark's Notation
        `{url:schema}Element` element, return the
        valid xpath on your xsd file, frequently
        it is not necesary overwrite this method but
        different xsd from different source
        can have different logic which I do not know now,
        then simply take this as an example and set the
        correct xpath conversion in your project.

        :param str element: Element string following the Clark's Notation"""
        element = element.split('}')[-1]
        xpath_path = \
            '//xs:element[@name="{element}"]' + \
            '/xs:annotation/xs:documentation'.format(element=element)
        return xpath_path