src/vs/workbench/contrib/files/browser/editors/textFileSaveErrorHandler.ts/TextFileSaveErrorHandler/registerListeners
class TextFileSaveErrorHandler:	private registerListeners(): void {
		this._register(this.textFileService.files.onDidSave(event => this.onFileSavedOrReverted(event.model.resource)));
		this._register(this.textFileService.files.onDidRevert(model => this.onFileSavedOrReverted(model.resource)));
		this._register(this.editorService.onDidActiveEditorChange(() => this.onActiveEditorChanged()));
	}