[closed] Create iterations and sub iterations under timeline section of RTC prgramatically

I want to handle it dynamically by reading mapping through XML 

where it would maintain mapping for each iteration like below

<Workitems>

<Workitem>

<UId>12345</UId>

<Id>1</Id>

<Name>Testing iteration creation 10-09-2018</Name>

<StartDate>2018-09-10 10:30:00</StartDate>

<EndDate>2018-09-20 19:15:00</EndDate>

<Identifier>parent</Identifier>

<Level>timeline</Level>

<ChildWorkitems>

<Child level="parent">

<ChildName>Child_1</ChildName>

<ChildStartDate>2018-09-11 10:40:00</ChildStartDate>

<ChildEndDate>2018-09-15 15:40:00</ChildEndDate>

<Identifier>child1</Identifier>

<Level>parent</Level>

</Child>

<Child level="child1">

<ChildName>Child_2</ChildName>

<ChildStartDate>2018-09-16 12:00:00</ChildStartDate>

<ChildEndDate>2018-09-20 19:05:00</ChildEndDate>

<Identifier>child2</Identifier>

<Level>child1</Level>

</Child>

</ChildWorkitems>

</Workitem>

<Workitem>

<UId>12345</UId>

<Id>1</Id>

<Name>Testing iteration creation 21-09-2018</Name>

<StartDate>2018-09-21 10:30:00</StartDate>

<EndDate>2018-09-30 19:15:00</EndDate>

<Identifier>parent</Identifier>

<Level>timeline</Level>

<ChildWorkitems>

<Child level="parent">

<ChildName>Child_1</ChildName>

<ChildStartDate>2018-09-23 10:40:00</ChildStartDate>

<ChildEndDate>2018-09-27 18:40:00</ChildEndDate>

<Identifier>child1</Identifier>

<Level>parent</Level>

</Child>

<Child level="child1">

<ChildName>Child_2</ChildName>

<ChildStartDate>2018-09-28 12:00:00</ChildStartDate>

<ChildEndDate>2018-09-30 19:05:00</ChildEndDate>

<Identifier>child2</Identifier>

<Level>child1</Level>

</Child>

</ChildWorkitems>

</Workitem>

</Workitems>

 So out of this I would want to get iteration hierarchy like below