Logstash output plugin

My version is 7.2.1 ,Write plugins through ‘logstash-output-java_output_example’ , use netty(nio) , Two parameters are passed in the construction parameter。
But there was a problem during the installation

What should I do ??

I found out it was my configuration file 。
so, How do configuration file parameters relate to ‘JavaOutputExample’ ?

problem is solved
Both require definition

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