NWProtocolFramer.Message A message for a custom protocol, in which you can store arbitrary key-value pairs. Declarationclass Message TopicsCreating Framer Messagesinit(definition:)init(instance:)Accessing Message Metadatasubscript(_:) RelationshipsInherits FromNWProtocolMetadataConforms ToSendableSendableMetatype See AlsoUsing Framers with ConnectionsNWProtocolFramer.DefinitionNWProtocolFramer.Options