def METHOD_NAME(cls, export_info_input):
    export_info = {}
    fields = export_info_input.get("fields")
    if fields:
        export_info["fields"] = fields
    for field, graphene_type in [
        ("attributes", Attribute),
        ("warehouses", Warehouse),
        ("channels", Channel),
    ]:
        pks = cls.get_items_pks(field, export_info_input, graphene_type)
        if pks:
            export_info[field] = pks
    return export_info