if (content != null) {
if (envelope.isUnidentifiedSender()) {
this.source = content.getSender().getLegacyIdentifier();
this.sourceDevice = content.getSenderDevice();
}
if (content.getDataMessage().isPresent()) {
if (content != null) {
if (envelope.isUnidentifiedSender()) {
this.source = content.getSender().getLegacyIdentifier();
this.sourceDevice = content.getSenderDevice();
}
if (content.getDataMessage().isPresent()) {