public void ApplyTest()
{
QueryMethods.CrossApplyWithGroupByAndTake();
QueryMethods.CrossApplyWithGroupJoinAndTake();
QueryMethods.CrossApplyWithAssociationAndTake();
QueryMethods.OuterApplyWithGroupByAndFirstOrDefault(); // TODO.N+1.
QueryMethods.OuterApplyWithGroupJoinAndFirstOrDefault(); // TODO.N+1.
QueryMethods.OuterApplyWithAssociationAndFirstOrDefault(); // TODO.N+1.
}