Dictionary of all keys and their values in Zookeeper.

def durables(self):
        """
        Dictionary of all keys and their values in Zookeeper.
        """
        results = dict()

        for child in self.connection.retry(self.connection.get_children, self.keyspace):
            value, _ = self.connection.retry(
                self.connection.get,
                self.__path_of(child),
                watch=self.__increment_last_updated
            )
            results[child] = self.encoding.decode(value)

        return results