src/vs/workbench/common/editor/editorGroupModel.ts/EditorGroupModel/constructor
class EditorGroupModel:	constructor(
		labelOrSerializedGroup: ISerializedEditorGroupModel | undefined,
		@IInstantiationService private readonly instantiationService: IInstantiationService,
		@IConfigurationService private readonly configurationService: IConfigurationService
	) {
		super();

		if (isSerializedEditorGroupModel(labelOrSerializedGroup)) {
			this._id = this.deserialize(labelOrSerializedGroup);
		} else {
			this._id = EditorGroupModel.IDS++;
		}

		this.onConfigurationUpdated();
		this.registerListeners();
	}