def on_call(receiver, dot, method)
      if rcv = resolve_receiver(receiver)
        method_call(method, [rcv])
      end
       
      keep_walking(receiver)
    end
def on_call(receiver, dot, method)
      if rcv = resolve_receiver(receiver)
        method_call(method, [rcv])
      end
       
      keep_walking(receiver)
    end
[:call,
             [:var_ref, {:ident=>"subclasses"}]