@abc.abstractmethod<EOL><INDENT>def integer_to_string(self, i):<DEDENT>
return<EOL>
Gets a string representation of a integer.

        :param i: an integer value
        :type i: ``integer``
        :return: the display string
        :rtype: ``string``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method must be implemented.*