SwiftDocCDocumentationServiceProtocolDocumentationServiceA service for processing documentation requests.protocol DocumentationServiceTopicsInstance Methodsfunc process(DocumentationServer.Message, completion: (DocumentationServer.Message) -> ())Processes the given documentation service message and calls the completion closure with the result as a message.Type Propertiesstatic var handlingTypes: [DocumentationServer.MessageType]The types of messages this service can handle.