src/vs/workbench/browser/parts/editor/editorActions.ts/AbstractSplitEditorAction/constructor
class AbstractSplitEditorAction:	constructor(
		id: string,
		label: string,
		protected editorGroupService: IEditorGroupsService,
		protected configurationService: IConfigurationService
	) {
		super(id, label);

		this.direction = this.getDirection();

		this.registerListeners();
	}