@abc.abstractmethod<EOL><INDENT>def set_numeric_score_increment(self, increment):<DEDENT>
pass<EOL>
Sets the numeric score increment.

        :param increment: the numeric score increment
        :type increment: ``decimal``
        :raise: ``InvalidArgument`` -- ``increment`` is invalid
        :raise: ``NoAccess`` -- ``increment`` cannot be modified

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