ActuallyAdditions/src/generated/resources/data/actuallyadditions/recipes/tagged_sticky_piston.json

{
  "type": "minecraft:crafting_shaped",
  "category": "misc",
  "key": {
    "P": {
      "item": "minecraft:piston"
    },
    "R": {
      "tag": "forge:slimeballs"
    }
  },
  "pattern": [
    "R",
    "P"
  ],
  "result": {
    "item": "minecraft:sticky_piston"
  }
}