JMX plugin logstash. Configuration for retreive process.pid , process.nb_thread?

i want add metrics to the JMX information from process.
i want add pid, the number of thread for this pid, etc...

i cant try the good query:
"queries" : [
{
"object_name" : "java.lang:type=Memory",
"object_alias" : "Memory"
},

anyone have the good object_name ?

thanks