def download_exiobase2():
    """ Downloading exiobase not implemented (registration required)
    """
    raise NotImplementedError(
        'EXIOBASE 2 requires registration prior to download. Please register at www.exiobase.eu and download the EXIOBASE MRIO files >MrIOT_IxI_fpa_coefficient_version2.2.2.zip<_and/or_>MrIOT_PxP_ita_coefficient_version2.2.2.zip<_manually (tab Data Download - EXIOBASE 2).'
        )
    return None
