# Thanks API calls
    @need_extension('Thanks')
    def thank_revision(self, rev_id):
        """
        Corresponding method to the 'action=thank' API action.
        
        @param rev_id: Revision ID for the revision to be thanked.
        @type rev_id: int
        """
        token = self.tokens['csrf']
        params = {'action': 'thank', 'format': 'json', 'rev': rev_id,
                  'token': token, 'source': 'pywikibot'}
        req = self._request(parameters=params)
        data = req.submit()
        return data