public static Logger.Builder xmlFormatter(XmlFormatter xmlFormatter) {
    return new Logger.Builder().xmlFormatter(xmlFormatter);
  }
Start to customize a {@link Logger} and set the {@link XmlFormatter}.

@param xmlFormatter the {@link XmlFormatter} to customize
@return the {@link Logger.Builder} to build the {@link Logger}
xlog/src/main/java/com/elvishew/xlog/XLog.java