pub(all) struct SpatialAssetIssue {
  code : String
  message : String
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct TownPresentationAsset {
  building_id : String
  placement_id : String
  artifact_id : String
  artifact_digest : String
  engineering_parent_id : String
  engineering_parent_digest : String
  payload_ref : String
  units : String
  coordinate_system : String
  up_axis : String
  handedness : String
  transform_id : String
  declared_losses : Array[String]
  assumptions : Array[String]
  authority_envelope_id : String
} derive(Eq, ToJson, 
@moonbitlang/core/debug.Debug
Debug)

fn ingest_moonmold_presentation(text : String, building_id~ : String, placement_id~ : String, expected_engineering_digest~ : String) -> Result[TownPresentationAsset, SpatialAssetIssue]