function createElementOverlay(mParameters) {
			return new ElementOverlay(mParameters);
		}
Creates ElementOverlay
@param {object} mParams - Parameter map
@param {sap.ui.core.Element} mParams.element - Element for which ElementOverlay should be created
@param {boolean} [mParams.root] - Proxy for "isRoot" property of sap.ui.dt.ElementOverlay constructor
@param {boolean} [mParams.visible] - Proxy for "visible" property of sap.ui.dt.ElementOverlay constructor
@param {boolean} [mParams.isPartOfTemplate] - Proxy for "isPartOfTemplate" property of sap.ui.dt.ElementOverlay constructor
@param {object} [mParams.parentMetadata] - Map with metadata from the parent
@return {Promise} returns Promise which is resolved when ElementOverlay is created and ready for use
@private