@Nullable
 private static PsiClass getLightClassForDecompiledPackage(
     @NotNull FqName packageFqName, @NotNull List<JetFile> filesWithCallables) {
   JetFile firstFile = filesWithCallables.iterator().next();
   if (firstFile.isCompiled()) {
     if (filesWithCallables.size() > 1) {
       LOG.error("Several files with callables for package: " + packageFqName);
     }
     return createLightClassForDecompiledKotlinFile(firstFile);
   }
   return null;
 }