code: def get_best_blockhash(self, id=None, endpoint=None):
          
          return self._call_endpoint(GET_BEST_BLOCK_HASH, id=id, endpoint=endpoint)
docs: Get the hash of the highest block
          Args:
              id: (int, optional) id to use for response tracking
              endpoint: (RPCEndpoint, optional) endpoint to specify to use
          Returns:
              json object of the result or the error encountered in the RPC call