{
  "chain": [
    {
      "duplicates_added": 0,
      "mapped": 255,
      "method": "RIC"
    }
  ],
  "drop_unmapped": 1,
  "dropped_unmapped": 0,
  "mapped_non_null": 255
}

{
  "new_type": 255
}

{
  "rt_id": 255
}

{
  "dropped": 171
}

{
  "M\u0026A": 84
}