src/vs/workbench/contrib/terminal/browser/terminalInstance.ts/TerminalInstanceDragAndDropController/_clearDropOverlay
class TerminalInstanceDragAndDropController:	private _clearDropOverlay() {
		if (this._dropOverlay && this._dropOverlay.parentElement) {
			this._dropOverlay.parentElement.removeChild(this._dropOverlay);
		}
		this._dropOverlay = undefined;
	}