treelevel <= 2 (Should be 3 tasks)
No.
Name
Start
End
1.
Task 1.2
2003-01-01 00:00
2003-01-01 00:00
2.
Task 1.1
2003-01-01 00:00
2003-01-01 00:00
3.
Task 1
2003-01-01 00:00
2003-01-01 00:00