How deep is the family tree of 1st and 2nd level CityObjects?

[balazsdukai]

The CityObjects objects contains all CityObjects at the root and we represent a hierarchy by having 1st and 2nd level City Objects, plus the children and parents members.

Is there a limit on how many 2nd-level CityObjects can be nested? For instance a deep hierarchy of BuildingInstallations?

"CityObjects": {
  "id-1": {
    "type": "Building",
    "geographicalExtent": [ 84710.1, 446846.0, -5.3, 84757.1, 446944.0, 40.9 ], 
    "attributes": { 
      "measuredHeight": 22.3,
      "roofType": "gable",
      "owner": "Elvis Presley"
    },
    "children": ["id-2"],
    "geometry": [{...}]
  },
  "id-2": {
    "type": "BuildingPart", 
    "parents": ["id-1"],
    "children": ["id-3"],
    ...
  },
  "id-3": {
    "type": "BuildingInstallation", 
    "parents": ["id-2"],
    "children": ["id-4"],
    ...
  },
  "id-4": {
    "type": "BuildingInstallation", 
    "parents": ["id-3"],
    "children": ["id-5"],
    ...
  },
  "id-5": {
    "type": "BuildingInstallation", 
    "parents": ["id-4"],
    "children": ["id-6"],
    ...
  },
// many many more of BuldingInstallation deep
}