public @NotNull List<VirtualFile> getExistingModuleFiles() {
    LocalFileSystem fs = LocalFileSystem.getInstance();

    List<VirtualFile> result = new ArrayList<>();
    Set<String> pathsInStack = getModulePaths();
    for (String each : pathsInStack) {
      VirtualFile f = fs.findFileByPath(each);
      if (f != null) result.add(f);
    }
    return result;
  }
public @NotNull List<VirtualFile> getExistingModuleFiles()