ENUM
LabOrder sorting enum
enum LabOrderOrderKeys {NAME_ASCNAME_DESCLAB_ASCLAB_DESCAPPT_ASCAPPT_DESCCLIENT_LAST_NAME_ASCCLIENT_LAST_NAME_DESCPROVIDER_LAST_NAME_ASCPROVIDER_LAST_NAME_DESCUPDATED_AT_ASCUPDATED_AT_DESC}