learning forge state

{
  "forge_marker": 1,
  "defaults": {
    "model": "camolib:slopeU.b3d",
    "textures": {
      "particle": "camolib:blocks/dt.transport.elevator.side",
      "down": "camolib:blocks/dt.transport.elevator.bottom",
      "up": "camolib:blocks/dt.transport.elevator.top",
      "side": "camolib:blocks/dt.transport.elevator.side"
    },
    "transform": "forge:default-block"
  },
  "variants": {
    "camo": {"true": {}, "false": {}},
    "inventory": [{}]
  }

}