id property
ID is the entry's position in the ledger. The ledger is append-only, so ids ascend with posting order and a higher id is a later entry.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
int? id;