@Nullable
	@Override
	public ClassInfo<JvmClassInfo> superClass() {
		String superName = info.getSuperName();
		if (superName == null) return null;
		return superClassLookup.apply(superName);
	}
JLinker wrapper of {@link JvmClassInfo}.

@author Matt Coley
recaf-core/src/main/java/software/coley/recaf/services/callgraph/LinkedClass.java