@Override
  public @NotNull PsiImportStatementStub deserialize(final @NotNull StubInputStream dataStream, final StubElement parentStub) throws IOException {
    byte flags = dataStream.readByte();
    String refText = dataStream.readNameString();
    return new PsiImportStatementStubImpl(parentStub, refText, flags);
  }
@Override
  public @NotNull PsiImportStatementStub deserialize(final @NotNull StubInputStream dataStream, final StubElement parentStub)