@NotNull
  private Collection<String> getConfigProperty(@NotNull ConfigKey configKey, @NotNull PsiClass psiClass) {
    @Nullable PsiFile psiFile = calculatePsiFile(psiClass);
    if (psiFile != null) {
      return discoverPropertyWithCache(configKey, psiFile);
    }
    return Collections.singletonList(configKey.getConfigDefaultValue());
  }
@NotNull
  private Collection<String> getConfigProperty(@NotNull ConfigKey configKey, @NotNull PsiClass psiClass)