SwiftDocCDocumentationServerDocumentationServer.MessageStructureDocumentationServer.MessageA message that can be provided to a documentation service.struct MessageTopicsInitializersinit(from: any Decoder) throwsinit(type: DocumentationServer.MessageType, clientName: String, payload: Data?)Creates a documentation service message.init(type: DocumentationServer.MessageType, identifier: String, payload: Data?)Creates a documentation service message.Instance Propertiesvar identifier: StringThe identifier of the message.var payload: Data?The payload of the message.var type: DocumentationServer.MessageTypeThe type of the message.Type Propertiesstatic var randomIdentifierGenerator: () -> StringClosure that generates a random identifier.