Register one producer-verified tree collection on an exclusive composition
filesystem. All paths and aggregate resource limits are preflighted before
namespace mutation. Returned authorities are bound to the exact filesystem,
tree id, package identity, digest, and byte count reported beside them.
Register one producer-verified tree collection on an exclusive composition filesystem. All paths and aggregate resource limits are preflighted before namespace mutation. Returned authorities are bound to the exact filesystem, tree id, package identity, digest, and byte count reported beside them.