src/vs/workbench/contrib/notebook/browser/view/cellParts/cellDnd.ts/CellDragAndDropController/startExplicitDrag
class CellDragAndDropController:	public startExplicitDrag(cell: ICellViewModel, _dragOffsetY: number) {
		if (!this.notebookEditor.notebookOptions.getLayoutConfiguration().dragAndDropEnabled || !!this.notebookEditor.isReadOnly) {
			return;
		}

		this.currentDraggedCell = cell;
		this.setInsertIndicatorVisibility(true);
	}