class FileHandler extends WriterHandlerimport { FileHandler } from "https://deno.land/std@0.50.0/log/handlers.ts"; ConstructorsnewFileHandler(levelName: LevelName, options: FileHandlerOptions)Propertiesprotected_file: Fileprotected_filename: stringprotected_mode: LogModeprotected_openOptions: OpenOptionsMethodsdestroy(): Promise<void>log(msg: string): voidsetup(): Promise<void>