in service/src/main/java/org/apache/fineract/cn/accounting/service/internal/repository/LedgerEntity.java [171:179]
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final LedgerEntity that = (LedgerEntity) o;
return identifier.equals(that.identifier);
}