public static Logger.Builder logLevel(int logLevel) {
    return new Logger.Builder().logLevel(logLevel);
  }
Start to customize a {@link Logger} and set the log level.

@param logLevel the log level to customize
@return the {@link Logger.Builder} to build the {@link Logger}
@since 1.3.0
xlog/src/main/java/com/elvishew/xlog/XLog.java