public <TKey, TResult> Queryable<TResult> groupByK(
FunctionExpression<Function1<T, TKey>> keySelector,
FunctionExpression<Function2<TKey, Enumerable<T>, TResult>> elementSelector,
EqualityComparer<TKey> comparer) {
return factory.groupByK(getThis(), keySelector, elementSelector, comparer);
}
public <TKey, TResult> Queryable<Grouping<TKey, TResult>> groupByK(
FunctionExpression<Function1<T, TKey>> keySelector,
FunctionExpression<Function2<TKey, Enumerable<T>, TResult>> elementSelector) {
return factory.groupByK(getThis(), keySelector, elementSelector);
}