private PsiAnnotation @NotNull [] toPsi(ParameterAnnotations parameterAnnotations) {
    if (parameterAnnotations.notNull) {
      return new PsiAnnotation[]{getNotNullAnnotation()};
    }
    else if (parameterAnnotations.nullable) {
      return new PsiAnnotation[]{getNullableAnnotation()};
    }
    return PsiAnnotation.EMPTY_ARRAY;
  }
private PsiAnnotation @NotNull [] toPsi(ParameterAnnotations parameterAnnotations)