code: def get(self, slug):
          
          kb = api.get_kb_by_slug(slug)
  
          # check if is accessible from api
          check_knowledge_access(kb)
  
          parser = reqparse.RequestParser()
          parser.add_argument(
              'unique', type=bool,
              help="The list contains unique names of 'mapping to'")
          parser.add_argument(
              'filter', type=str,
              help="Return only entries where 'from' matches this.")
          parser.add_argument('page', type=int,
                              help="Require a specific page")
          parser.add_argument('per_page', type=int,
                              help="Set how much result per page")
          parser.add_argument('match_type', type=str,
                              help="s=substring, e=exact, sw=startswith")
          args = parser.parse_args()
          return KnwKBMappingsFromResource \
              .search_list(kb, args['filter'],
                           args['match_type'],
                           args['page'], args['per_page'], args['unique'])
docs: Get list of "mappings from".
  
          Url parameters
              - unique: if set, return a unique list
              - filter: filter "mappings from"
              - page
              - per_page
              - match_type: s=substring, e=exact, sw=startswith