How to use the pybliometrics.scopus.utils.check_field_consistency function in pybliometrics

documents affiliation affiliation_id city country areas).

        All entries are strings or None.  Areas combines abbreviated subject
        areas followed by the number of documents in this subject.

        Raises
        ------
        ValueError
            If the elements provided in integrity_fields do not match the
            actual field names (listed above).
        """
        # Initiate namedtuple with ordered list of fields
        fields = 'eid surname initials givenname affiliation documents '\
                 'affiliation_id city country areas'
        auth = namedtuple('Author', fields)
        check_field_consistency(self.integrity, fields)
        # Parse elements one-by-one
        out = []
        for item in self._json:
            name = item.get('preferred-name', {})
            aff = item.get('affiliation-current', {})
            fields = item.get('subject-area',
                              [{'@abbrev': '', '@frequency': ''}])
            if isinstance(fields, dict):
                fields = [fields]
            areas = ["{} ({})".format(d.get('@abbrev', ''),
                                      d.get('@frequency', ''))
                     for d in fields]
            new = auth(eid=item.get('eid'), initials=name.get('initials'),
                       surname=name.get('surname'), areas="; ".join(areas),
                       givenname=name.get('given-name'),
                       documents=item.get('document-count', '0'),

The information in each namedtuple is (eid name variant documents city
        country parent).

        All entries are strings or None.  variant combines variants of names
        with a semicolon.

        Raises
        ------
        ValueError
            If the elements provided in integrity_fields do not match the
            actual field names (listed above).
        """
        # Initiate namedtuple with ordered list of fields
        fields = 'eid name variant documents city country parent'
        aff = namedtuple('Affiliation', fields)
        check_field_consistency(self.integrity, fields)
        # Parse elements one-by-one
        out = []
        for item in self._json:
            name = item.get('affiliation-name')
            variants = [d.get('$', "") for d in item.get('name-variant', [])
                        if d.get('$', "") != name]
            new = aff(eid=item.get('eid'), variant=";".join(variants),
                      documents=item.get('document-count', '0'), name=name,
                      city=item.get('city'), country=item.get('country'),
                      parent=item.get('parent-affiliation-id'))
            out.append(new)
        # Finalize
        check_integrity(out, self.integrity, self.action)
        return out or None

Notes
        -----
        The list of authors and the list of affiliations per author are
        deduplicated.
        """
        # Initiate namedtuple with ordered list of fields
        fields = 'eid doi pii pubmed_id title subtype subtypeDescription creator ' \
                 'afid affilname affiliation_city affiliation_country author_count ' \
                 'author_names author_ids author_afids coverDate '\
                 'coverDisplayDate publicationName issn source_id eIssn '\
                 'aggregationType volume issueIdentifier article_number '\
                 'pageRange description authkeywords citedby_count '\
                 'openaccess fund_acr fund_no fund_sponsor'
        doc = namedtuple('Document', fields)
        check_field_consistency(self.integrity, fields)
        # Parse elements one-by-one
        out = []
        for item in self._json:
            info = {}
            # Parse affiliations
            try:
                info["affilname"] = _join(item['affiliation'], 'affilname')
                info["afid"] = _join(item['affiliation'], 'afid')
                info["aff_city"] = _join(item['affiliation'], 'affiliation-city')
                info["aff_country"] = _join(item['affiliation'],
                                            'affiliation-country')
            except KeyError:
                pass
            # Parse authors
            try:
                # Deduplicate list of authors