projectJar_2
    end

    subgraph Plugins classpath*
        instrumentedAndUpgradedClasspath
        modifiedExternalJar1
        modifiedExternalJar2
        modifiedProjectJar
    end

    classpath --> instrumentAndUpgrade --> instrumentedAndUpgradedClasspath
    classpath --> instrumentOnly --> instrumentedAndUpgradedClasspath
```


External dependencies are instrumented and upgraded in three steps: