def METHOD_NAME():
    """
    Migrate the type_string associated with the potcar family groups.
    Previously, these groups has type_string: data.vasp.potcar.family.
    Since AiiDA 1.2, groups used by plugins should be defined by subclass and entrypoint names.
    This commands recreates the old style group using the ``PotcarGroup`` class.
    """
    from aiida_vasp.data.potcar import migrate_potcar_group
    migrate_potcar_group()