src/vs/workbench/contrib/notebook/browser/view/renderers/cellDnd.ts/CellDragAndDropController/explicitDrop
class CellDragAndDropController:	public explicitDrop(cell: ICellViewModel, ctx: { dragOffsetY: number, ctrlKey: boolean, altKey: boolean; }) {
		this.currentDraggedCell = undefined;
		this.setInsertIndicatorVisibility(false);

		const target = this.list.elementAt(ctx.dragOffsetY);
		if (!target || target === cell) {
			return;
		}

		const cellTop = this.list.getAbsoluteTopOfElement(target);
		const cellHeight = this.list.elementHeight(target);
		const dropDirection = this.getExplicitDragDropDirection(ctx.dragOffsetY, cellTop, cellHeight);
		this._dropImpl(cell, dropDirection, ctx, target);
	}