src/main/java/com/seanchenxi/gwt/storage/client/StorageKeyFactory.java
@Deprecated
  public static <T> StorageKey<T> objectKey(String keyName){
    return new StorageKey<>(keyName, Object.class);
  }
@Deprecated
  public static <T> StorageKey<T> objectKey(String keyName){
    return new StorageKey<>(keyName, Object.class);
  }
Returns non-primitive type value's storage key.

@param keyName name of storage key
@param <T> type of value
@return non-primitive type value's storage key
@deprecated use {@link #isSerializableKey(String)} or {@link #serializableKey(String)} instead