function updateRenderingDelegate(oElement, oDelegate, iThresholdCount) {
		if (oDelegate.canSkipRendering || !(oDelegate.onAfterRendering || oDelegate.onBeforeRendering)) {
			return;
		}

		oElement._iRenderingDelegateCount += (iThresholdCount || -1);

		if (oElement.bOutput === true && oElement._iRenderingDelegateCount == iThresholdCount) {
			RenderManager.canSkipRendering(oElement, 1 /* update skip-the-rendering DOM marker, only if the apiVersion is 4 */);
		}
	}
Updates the count of rendering-related delegates and if the given threshold is reached,
informs the RenderManager` to enable/disable rendering V4 for the element.

@param {sap.ui.core.Element} oElement The element instance
@param {object} oDelegate The delegate instance
@param {iThresholdCount} iThresholdCount Whether the delegate has been added=1 or removed=0.
   At the same time serves as threshold when to inform the `RenderManager`.
@private