docs: public static void store(final long pointer,
                               final Object object) {
          final Object oldValue = MAPPED_OBJECTS.put(pointer,
                                                     object);
          if (oldValue != null) {
              //put it back!
              MAPPED_OBJECTS.put(pointer,
                                 oldValue);
              throw new IllegalStateException(String.format("Can not re-map existing pointer.\n" +
                                                            "Pointer=%s\n" +
                                                            "old value=%s" +
                                                            "\nnew value=%s",
                                                            pointer,
                                                            oldValue,
                                                            object));
          }
      }