Specifies the index synchronization phase.
Enumerated values
ISP_INVALID: invalid value that is used as a placeholder in enumeration and cannot be used in actual business.
ISP_FULL: full synchronization phase
ISP_INCR: incremental synchronization phase
enum IndexSyncPhase {
ISP_INVALID = 0;
ISP_FULL = 1;
ISP_INCR = 2;
}