'Returns iscsi iqn.'

def get_iscsi_service_details(self):

    iscsi_service_iter = netapp_api.NaElement('iscsi-service-get-iter')
    result = self.connection.invoke_successfully(iscsi_service_iter, True)
    if (result.get_child_content('num-records') and (int(result.get_child_content('num-records')) >= 1)):
        attr_list = result.get_child_by_name('attributes-list')
        iscsi_service = attr_list.get_child_by_name('iscsi-service-info')
        return iscsi_service.get_child_content('node-name')
    LOG.debug('No    iSCSI    service    found    for    vserver    %s', self.vserver)
    return None
