format(contentUriObject, docId) {
		let rootUri;

		if (typeof contentUriObject === "string") {
			rootUri = contentUriObject;
		} else {
			rootUri = contentUriObject.rootUri;
			docId = contentUriObject.docId;
		}

		if (docId) return [rootUri, docId].join("::");
		else return rootUri;
	}
Formats the five contentUri object to string
@param {{rootUri: string, docId: string} | String} contentUriObject or rootId
@param {string} [docId]
@returns {string}