public IDbAsyncEnumerator <TElement> ExecuteQueryAsync <TElement>(
Expression expression)
{
var query = asyncProvider.CreateQuery <TElement>(expression) as IDbAsyncEnumerable <TElement>;
if (query == null)
{
throw new InvalidOperationException(
"Decorated query provider of AuthorizingQueryProvider doesn't support async queries: " +
provider.ToString());
}
return(query.GetAsyncEnumerator());
}
