public async Task <bool> DeleteById <TEntity>(Expression <Func <TEntity, bool> > predicate, bool AutoSave = SAVE) where TEntity : class { var items = repository.Find(predicate); if (items == null) { return(false); } var result = repository.Delete <TEntity>(items); if (AutoSave) { await SaveChangesAsync().ConfigureAwait(false); } return(result); }