I'm trying to override BatchUpdateAsync as below, however the method is not found? I have the other CustomAdaptor methods overridden and working.
public override async Task<object> BatchUpdateAsync(DataManager dataManager, object changedRecords,
object addedRecords, object deletedRecords, string keyField, string key,int dropindex)
{
Error CS0115 'ReportTextManagerBase.CustomAdaptor.BatchUpdateAsync(DataManager, object, object, object, string, string, int)': no suitable method found to override MFSF.WebAdminUI