src/vs/workbench/contrib/output/common/outputChannelModel.ts/FileOutputChannelModel/constructor
class FileOutputChannelModel:	constructor(
		modelUri: URI,
		mimeType: string,
		file: URI,
		@IFileService fileService: IFileService,
		@IModelService modelService: IModelService,
		@IModeService modeService: IModeService
	) {
		super(modelUri, mimeType, file, fileService, modelService, modeService);

		this.fileHandler = this._register(new OutputFileListener(this.file, this.fileService));
		this._register(this.fileHandler.onDidContentChange(size => this.update(size)));
		this._register(toDisposable(() => this.fileHandler.unwatch()));
	}