type Registry struct {
	// AdminStorage is the storage implementation to use for persisting tree metadata.
	storage.AdminStorage
	// LogStorage is the storage implementation to use for persisting logs.
	storage.LogStorage
	// MapStorage is the storage implementation to use for persisting maps.
	storage.MapStorage
	// ElectionFactory provides MasterElection instances for each tree.
	ElectionFactory election.Factory
	// QuotaManager provides rate limiting capabilities for Trillian.
	QuotaManager quota.Manager
	// MetricFactory provides metrics for monitoring.
	monitoring.MetricFactory
	// NewKeyProto creates a new private key based on a key specification.
	// It returns a proto that can be passed to a keys.ProtoHandler to get a crypto.Signer.
	NewKeyProto keys.ProtoGenerator
	// SetProcessStatus sets the current process status for diagnostic purposes.
	SetProcessStatus func(string)
}