Create-Design-n-Decor/src/generated/resources/assets/design_decor/blockstates/iron_catwalk.json

{
  "variants": {
    "turned_on=false,waterlogged=false": {
      "model": "design_decor:block/iron_catwalk/block"
    },
    "turned_on=false,waterlogged=true": {
      "model": "design_decor:block/iron_catwalk/block"
    },
    "turned_on=true,waterlogged=false": {
      "model": "design_decor:block/iron_catwalk/block_down"
    },
    "turned_on=true,waterlogged=true": {
      "model": "design_decor:block/iron_catwalk/block_down"
    }
  }
}