The number of assets currently belonging to this collection.
Account discriminator; always Key.CollectionV1.
The collection's display name.
The total number of assets ever minted into this collection.
The authority allowed to update the collection and manage its plugins.
The URI pointing to the collection's off-chain JSON metadata.
An MPL Core collection: a single account grouping assets under a shared update authority, with collection-level plugins stored afterward in the same account.