void ScExternalDataProvidersObj::insertByIndex(sal_Int32 nIndex, const css::uno::Any& rAny)
{
    if ( rAny.getValueTypeClass() == uno::TypeClass_INTERFACE )
    {
        auto unoRef = css::uno::Reference<css::sheet::XExternalDataProvider>(rAny, css::uno::UNO_QUERY);
        mpDoc->GetExternalDataMapper().insertDataSource(sc::ExternalDataSource(OUString("rUrl"), OUString("rProvider"), mpDoc));
    }
    else
        throw lang::IllegalArgumentException();
}