@Override
  public @NotNull PsiImportModuleStatementStub createStub(@NotNull LighterAST tree, @NotNull LighterASTNode node, @NotNull StubElement<?> parentStub) {
    String refText = null;

    for (LighterASTNode child : tree.getChildren(node)) {
      IElementType type = child.getTokenType();
      if (type == JavaElementType.MODULE_REFERENCE) {
        refText = JavaSourceUtil.getReferenceText(tree, child);
      }
    }
    return new PsiImportModuleStatementStubImpl(parentStub, refText);
  }
@Override
  public @NotNull PsiImportModuleStatementStub createStub(@NotNull LighterAST tree, @NotNull LighterASTNode node, @NotNull StubElement<?> parentStub)