src/vs/workbench/contrib/preferences/browser/preferencesWidgets.ts/SettingsHeaderWidget/constructor
class SettingsHeaderWidget:	constructor(protected editor: ICodeEditor, private title: string) {
		super();
		this.create();
		this._register(this.editor.onDidChangeConfiguration(() => this.layout()));
		this._register(this.editor.onDidLayoutChange(() => this.layout()));
	}