private static @NotNull JavaSdkVersion getJavaVersion(PsiElement element) {
    final Module module = ModuleUtilCore.findModuleForPsiElement(element);
    if (module != null) {
      final Sdk sdk = ModuleRootManager.getInstance(module).getSdk();
      if (sdk != null && sdk.getSdkType() instanceof JavaSdk) {
        final JavaSdkVersion version = JavaSdk.getInstance().getVersion(sdk);
        if (version != null) {
          return version;
        }
      }
    }
    return JavaSdkVersion.JDK_1_9;
  }
private static @NotNull JavaSdkVersion getJavaVersion(PsiElement element)