@Override
  public @Nullable PsiImportModuleStatement findImportModuleStatement(String name) {
    while (true) {
      Map<String, PsiImportModuleStatement> map = myModuleNameToImportMap;
      if (map == null) {
        initializeMaps();
      }
      else {
        return map.get(name);
      }
    }
  }
@Override
  public @Nullable PsiImportModuleStatement findImportModuleStatement(String name)