def METHOD_NAME(self, exprs, tag, valuePrefix=None, limit=None, requestContext=None):
    """
    Return auto-complete suggestions for tags and values based on the matches
    for the specified expressions, optionally filtered by tag and/or value prefix
    """
    if not self.settings.TAGDB_HTTP_AUTOCOMPLETE:
        return super(HttpTagDB, self).METHOD_NAME(
            exprs, tag, valuePrefix=valuePrefix, limit=limit, requestContext=requestContext
        )
    if limit is None:
        limit = self.settings.TAGDB_AUTOCOMPLETE_LIMIT
    fields = {
        'tag': tag or '',
        'valuePrefix': valuePrefix or '',
        'limit': str(limit),
        'expr': exprs,
    }
    return self.request('POST', '/tags/autoComplete/values', fields, requestContext)