| enumerator | :: | TERMINATE_ID | = | 1 | |
| enumerator | :: | DONE_ID | = | 2 | |
| enumerator | :: | PrefetchDone_ID | = | 3 | |
| enumerator | :: | CollectivePrefetchDone_ID | = | 4 | |
| enumerator | :: | StageDone_ID | = | 5 | |
| enumerator | :: | CollectiveStageDone_ID | = | 6 | |
| enumerator | :: | ADDEXTCOLLECTION_ID | = | 7 | |
| enumerator | :: | ADDHISTCOLLECTION_ID | = | 8 | |
| enumerator | :: | ID_ID | = | 9 | |
| enumerator | :: | PrefetchData_ID | = | 10 | |
| enumerator | :: | COLLECTIVEPrefetchData_ID | = | 11 | |
| enumerator | :: | StageData_ID | = | 12 | |
| enumerator | :: | COLLECTIVEStageData_ID | = | 13 | |
| enumerator | :: | ModifyMetadata_ID | = | 14 | |
| enumerator | :: | ReplaceMetadata_ID | = | 15 | |
| enumerator | :: | HandShake_ID | = | 16 | |
| enumerator | :: | DUMMY_ID | = | 17 | |
| enumerator | :: | ForwardData_ID | = | 18 |
| procedure(deserialize), public, deferred :: deserialize | |
| procedure, public :: dispatch | |
| procedure(get_length), public, deferred :: get_length | |
| procedure(get_type_id), public, deferred, nopass :: get_type_id | |
| procedure(serialize), public, deferred :: serialize |
| procedure(handle), public, deferred :: handle |