Specifies the update mode of the index.
Enumerated values
IUM_ASYNC_INDEX: asynchronous update mode. The update operation is performed asynchronously on the index table and does not block the current thread or process.
IUM_SYNC_INDEX: synchronous update mode. The update operation is performed synchronously on the index table and blocks the current thread or process until the update is complete.
enum IndexUpdateMode {
IUM_ASYNC_INDEX = 0;
IUM_SYNC_INDEX = 1;
}