@abc.abstractmethod<EOL><INDENT>def update_configuration(self, configuration_form):<DEDENT>
pass<EOL>
Updates an existing ``Configuration``.

        :param configuration_form: the configuration form
        :type configuration_form: ``osid.configuration.ConfigurationForm``
        :raise: ``IllegalState`` -- ``configuration_form`` already used in an update transaction
        :raise: ``InvalidArgument`` -- the form contains an invalid value
        :raise: ``NullArgument`` -- ``configuration_form`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``configuration_form`` did not originate from ``get_configuration_form_for_update()``

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