constructor(url, identifier, readableIdentifier) {
		super(ASSET_MODULE_TYPE_RAW_DATA_URL, null);
		this.url = url;
		this.urlBuffer = url ? Buffer.from(url) : undefined;
		this.identifierStr = identifier || this.url;
		this.readableIdentifierStr = readableIdentifier || this.identifierStr;
	}
@param {string} url raw url
@param {string} identifier unique identifier
@param {string=} readableIdentifier readable identifier