Jenkins pipeline - change class name of loaded scripts - jenkins-pipeline

Question

I have a Jenkins Pipeline project which loads several Groovy scripts. When I run this pipeline, Jenkins names these scripts' classes Script1, Script2, and so on. These names are displayed when replaying a build. They also appear on exception stack traces. I find this confusing, especially when there is more than a couple of scripts.
Is there any way of setting these names from the pipeline or -preferably- from within the scripts themselves? So far I tried manipulating the scripts' metaClass:
this.metaClass.name = 'Foo' //fails, doesn't find metaClass property
this.class.metaClass.name = 'Foo' //doesn't fail but has no apparent effect
this.class.metaClass.simpleName = 'Foo' //idem
this.class.metaClass.canonicalName = 'Foo' //idem
NOTE: I am well aware of Jenkins shared libraries. This question is meant to focus on loaded scripts alone.

Answer 1

No, there is currently no way to change the generated class name for a loaded script.
The name generation comes from the load step implementation class LoadStepExecution.
String clazz = execution.getNextScriptName(step.getPath());
In CpsFlowExecution, the script name is generated from the calling generateScriptName() on the shell which is a CpsGroovyShell. This invocationand removes the .groovy suffix.
public String getNextScriptName(String path) {
return shell.generateScriptName().replaceFirst("[.]groovy$", "");
}
The CpsGroovyShell generates the class name, which is where the Script1.groovy, Script2.groovy, etc. get created from
#Override
protected synchronized String generateScriptName() {
if (execution!=null)
return "Script" + (execution.loadedScripts.size()+1) + ".groovy";
else
return super.generateScriptName();
}

Answer 2

Maybe this will be of some help to some users. By chance I managed to force the name of the script class when explicitly creating a class inside the script, like:
class MyOwnScriptClass {
def someClassMember() {
}
}
return new MyOwnScriptClass()
After loading that file it shows me MyOwnScriptClass as class name - for the object which is returned by that script - not the script itself. However for my purposes this is sufficient.