in sources/coffeeshop/ddd-commons/src/main/java/solid/humank/ddd/commons/baseclasses/EntityId.java [30:38]
protected EntityId(long seqNo, OffsetDateTime occurredDate) {
if (seqNo < 0) {
throw new IllegalArgumentException("SeqNo can not be negative digital");
}
this.seqNo = seqNo;
this.occurredDate = occurredDate;
}