See how to leverage type hierarchy

[CodesAway]

https://stackoverflow.com/a/25970391
IType boundType = (IType)typeBinding.getJavaElement();

https://www.ibm.com/support/knowledgecenter/en/SSUFAU_2.0.0/org.eclipse.jdt.doc.isv-3.14.100/reference/api/org/eclipse/jdt/core/ITypeHierarchy.html