src/vs/workbench/contrib/mergeEditor/browser/mergeMarkers/mergeMarkersController.ts/MergeMarkersController/constructor
class MergeMarkersController:	public constructor(
		public readonly editor: ICodeEditor,
		public readonly mergeEditorViewModel: IObservable<MergeEditorViewModel | undefined>,
	) {
		super();

		this._register(editor.onDidChangeModelContent(e => {
			this.updateDecorations();
		}));

		this._register(editor.onDidChangeModel(e => {
			this.updateDecorations();
		}));

		this.updateDecorations();
	}