{
  "id": 0
}
{
  "id": 1,
  "parents": []
}
{
  "id": 2,
  "parents": [
    0
  ]
}
{
  "id": 3,
  "parents": [
    1,
    2
  ]
}
{
  "id": 4,
  "parents": [
    3
  ]
}
{
  "id": 5,
  "parents": [
    3
  ]
}
{
  "id": 6,
  "parents": [
    3
  ]
}
{
  "id": 7,
  "parents": [
    4,
    5,
    6
  ]
}
{
  "id": 8,
  "parents": [
    1,
    2,
    3,
    4,
    5,
    6,
    7,
    0
  ]
}

defaults

012345678

With Config

012345678