code: @Override
    public void visit(int version,
                      int access,
                      String name,
                      String signature,
                      String superName,
                      String[] interfaces) {
      ClassInfo classInfo = new ClassInfo(name,
          superName,
          interfaces,
          access,
          location);
  
      foundClasses.put(classInfo.getClassName(), classInfo);
      currentClass = classInfo;
    }
docs: "Visit" a class. Required by ASM <tt>ClassVisitor</tt> interface.
  
  @param version    class version
  @param access     class access modifiers, etc.
  @param name       internal class name
  @param signature  class signature (not used here)
  @param superName  internal super class name
  @param interfaces internal names of all directly implemented
  interfaces