This function is part of the Auth Interface.
Fetch one of the merged account IDs for a given logged in account.
The Epic Account ID associated with the index passed.
|Parameter Type And Name||Usage Information|
|const EOS_EpicAccountId LocalUserId||The account ID of a currently logged in account.|
|const uint32_t Index||An index into the list of merged accounts. If the index is out of bounds, the returned Epic Account ID will be invalid.|