final String key = (String)properties.get("key");
if (host != null && port != null && username != null && password != null && key != null) {
final App app = StructrApp.getInstance();
try (final Tx tx = app.tx()) {
// create push transmission to be filled later
final PushTransmission tms = new PushTransmission(username, password, host, port.intValue());
for (final SchemaNode node : app.nodeQuery(SchemaNode.class).getAsList()) {