The constants for unique identifiers for the concepts that identify event types are as follows:
CANONICAL_EVENT_TYPE_ID_Approved
CANONICAL_EVENT_TYPE_ID_Created
CANONICAL_EVENT_TYPE_ID_Deleted
CANONICAL_EVENT_TYPE_ID_Deprecated
CANONICAL_EVENT_TYPE_ID_Downloaded
CANONICAL_EVENT_TYPE_ID_Relocated
CANONICAL_EVENT_TYPE_ID_Undeprecated
CANONICAL_EVENT_TYPE_ID_Updated
CANONICAL_EVENT_TYPE_ID_Versioned