setData property
If this item is a quest, this block will be non-null. In practice, I wish I had called this the Quest block, but at the time it wasn't clear to me whether it would end up being used for purposes other than quests. It will contain data about the steps in the quest, and mechanics we can use for displaying and tracking the quest.
Implementation
@JsonKey(name:'setData')
DestinyItemSetBlockDefinition? setData;