greenbone / python-gvm

        return cmd.to_string()

    def modify_role_command(self, role_id, kwargs):

        """Generates xml string for modify role on gvmd."""

        if not role_id:

            raise ValueError('modify_role requires a role_id element')

        cmd = XmlCommand('modify_role')

        cmd.set_attribute('role_id', role_id)

        comment = kwargs.get('comment', '')

        if comment:

            cmd.add_element('comment', comment)

        name = kwargs.get('name', '')

        if name:

            cmd.add_element('name', name)

        users = kwargs.get('users', '')

        if users:

            cmd.add_element('users', users)

        return cmd.to_string()

    def modify_scanner_command(self, scanner_id, host, port, scanner_type,

                               kwargs):

        return cmd.to_string()

    def modify_group_command(self, group_id, kwargs):

        """Generates xml string for modify group on gvmd."""

        if not group_id:

            raise ValueError('modify_group requires a group_id attribute')

        cmd = XmlCommand('modify_group')

        cmd.set_attribute('group_id', group_id)

        comment = kwargs.get('comment', '')

        if comment:

            cmd.add_element('comment', comment)

        name = kwargs.get('name', '')

        if name:

            cmd.add_element('name', name)

        users = kwargs.get('users', '')

        if users:

            cmd.add_element('users', users)

        return cmd.to_string()

    def modify_note_command(self, note_id, text, kwargs):

        """Generates xml string for modify note on gvmd."""