{
  "keys": [
    {
      "name": "result",
      "role": "output",
      "type": "item_stack"
    },
    {
      "name": "input",
      "role": "input",
      "type": "optional_ingredient"
    },
    {
      "name": "fluid",
      "type": "fluid_stack"
    },
    {
      "name": "sound",
      "type": {"type": "registry_element","registry": "minecraft:sound_event"},
      "default_optional": true
    }
  ],
  "unique": ["result"]
}