<How to transform the Array of object to an object...

# stackoverflow

[user]

How to transform the Array of object to an object in Kotlin
I have a list of object
Ftemp(Wert_1_id='I130320', Wert_2_id='I130278', Wert_3_id='I130115')
Ftemp(Wert_1_id='I130320', Wert_2_id='I130278', Wert_3_id='I130108')
Ftemp(Wert_1_id='I130320', Wert_2_id='I130278', Wert_3_id='I130110')
Ftemp(Wert_1_id='I130320', Wert_2_id='I130106', Wert_3_id='I130271')

and want to transform the list to an object. Like
"cat": [
{ "id_": "I130320",
"children": [
{
"id_": "I130278",
"children": [
{...