private String resolveLoggerProperty(LogManager manager,String property){
  String propertyKey=HANDLER_PROP_PREFIX + property;
  return System.getProperty(propertyKey,manager.getProperty(propertyKey));
}

private String resolveLoggerProperty ( LogManager manager , String property ) { String propertyKey = HANDLER_PROP_PREFIX + property ; return System . getProperty ( propertyKey , manager . getProperty ( propertyKey ) ) ; }
resolve logger property by its name - system property value if available , or logger property extracted from the log configuration .
