If an item has a related gearset, this is the list of items in that set, and an unlock expression that evaluates to a number representing the progress toward gearset completion (a very rare use for unlock expressions!)
The list of hashes for items in the gearset. Use them to look up DestinyInventoryItemDefinition entries for the items in the set.
Mapped to DestinyInventoryItemDefinition in the manifest.
The maximum possible number of items that can be collected.
If an item has a related gearset, this is the list of items in that set, and an unlock expression that evaluates to a number representing the progress toward gearset completion (a very rare use for unlock expressions!)