private @NotNull JavaArrangementPropertyInfo getPropertyInfo(@NotNull String propertyName, @NotNull String className) {
    Pair<String, String> key = Pair.create(propertyName, className);
    JavaArrangementPropertyInfo propertyInfo = myProperties.get(key);
    if (propertyInfo == null) {
      myProperties.put(key, propertyInfo = new JavaArrangementPropertyInfo());
    }
    return propertyInfo;
  }
private @NotNull JavaArrangementPropertyInfo getPropertyInfo(@NotNull String propertyName, @NotNull String className)