Java Annotation Processing SuperClass Data extraction

Hi I am creating a code generation program, as part of it I need to extract info of the GenericType passed into a class which extends an Abstract class, for further clarification This is the class I annotated with my annotation

@MyAnnotation
public class First extends ParentC<Story, String> {
...
}

I was able to extract the element First from roundEnviornment now I need to know which classes that is provided to its super class( Story and String) I extracted super class using below snippet but I couldn't get any info on Generic type provided

            TypeElement elm = //extraction of this element was successful
            messager.printMessage(Diagnostic.Kind.NOTE,"==============="+ elm.asType().toString());
            TypeMirror parent = elm.getSuperclass();
            DeclaredType parentType = (DeclaredType)parent;
            Element parentEl = parentType.asElement();
            messager.printMessage(Diagnostic.Kind.NOTE,"==============="+ parentEl.asType().toString());
            messager.printMessage(Diagnostic.Kind.NOTE, "==============="+ parentEl.getSimpleName());

the output of the code is given below

Note: ===============com.demo.service.First
Note: ===============com.demo.ParentC<T,K>
Note: ===============ParentC

So is there any way I can get the Type of the generic type as Story class and String class ?