当我在confluent control center下载连接器配置json文件时，我可以看到创建它的人的密码，如何隐藏它？
是否有任何属性可以设置为隐藏它。？
这是配置连接器文件。

{
   "name": "connect-xxxxxx-source",
   "config": {
       "connector.class": 
  "com.github.jcustenborder.kafka.connect.spooldir.SpoolDirLineDelimitedSourceConnector",
       "tasks.max": "5",
       "errors.retry.timeout": "100000",
       "errors.retry.delay.max.ms": "3000",
       "errors.tolerance": "all",
       "errors.log.enable": "true",
       "errors.log.include.messages": "true",
       "topic": "xxxxx_il",
       "cleanup.policy": "MOVEBYDATE",
       "input.path": "/xxxx/input",
       "finished.path": "/xxxxxarchive",
       "error.path": "xxxxxerror",
       "input.file.pattern": "xxxxx",
       "halt.on.error": "false",
       "timestamp.mode": "FILE_TIME",
       "file.buffer.size.bytes": "1048576000",
       "static.key": "fndues",
       "traceid.enable": "true",
       "principal.service.name": "xxxx",
       "principal.service.password": "xxxxxxx"
  }
}