This is the hash identifier for a DestinyInventoryItemDefinition representing this quest step.
Mapped to DestinyInventoryItemDefinition in the manifest.
Used for tracking which step a user reached. These values will be populated in the user's internal state, which we expose externally as a more usable DestinyQuestStatus object. If this item has been obtained, this value will be set in trackingUnlockValueHash.
Defines a particular entry in an ItemSet (AKA a particular Quest Step in a Quest)