},
    FROM_DECLARATION_ANNOTATIONS_ONLY {
      @Override
      boolean isNullable(Invokable<?, ?> invokable) {
        return containsNullable(invokable.getAnnotations());
      }

      @Override
      boolean isNullable(Parameter param) {
        return containsNullable(param.getAnnotations());
      }
    };

    abstract boolean isNullable(Invokable<?, ?> invokable);