_createStaticAreaRef = () => {
		if (!bDomReady) {
			throw new Error("DOM is not ready yet. Static UIArea cannot be created.");
		}
		let oStaticArea = document.getElementById(StaticArea.STATIC_UIAREA_ID);

		if (!oStaticArea) {

			oStaticArea = document.createElement("div");
			oStaticArea.setAttribute("id", StaticArea.STATIC_UIAREA_ID);

			Object.assign(oStaticArea.style, {
				"height": "0",
				"width": "0",
				"overflow": "hidden",
				"float":  Localization.getRTL() ? "right" : "left"
			});

			document.body.insertBefore(oStaticArea, document.body.firstChild);
		}
		return oStaticArea;
	}
Checks whether the given DOM element is part of the static area.

@param {Element} oDomRef The DOM element to check
@returns {boolean} Whether the given DOM reference is part of the static UIArea
@throws {Error} if the document is not ready yet

@public