tier property
Tier is the engine tier the entry belongs to, quality or bulk. Part of the identity: the two tiers keep separate renderings of the same source.
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
String? tier;