How to get CPU usage in JMX custom yaml file?

Question

I have this code in .yaml to get the classes and the uptime but I don't know how do I get the CPU Usage.

Code:

    - include:
        domain: java.lang
        type: Runtime
        attribute:
        Uptime:
           metric_type: gauge
           alias: jvm.uptime


    - include:
       domain: java.lang
       type: ClassLoading
       attribute:
         LoadedClassCount:
           metric_type: gauge
           alias: jvm.classes.count