yarn/mappings/net/minecraft/block/Material.json

{
  "obf": "ayo",
  "name": "net/minecraft/block/Material",
  "field": [
    {
      "obf": "a",
      "name": "air",
      "type": "Lnone/ayo;"
    }
  ],
  "constructors": [],
  "method": [],
  "innerClass": []
}