{
    "variants": {
      "age=0": {
        "model": "tutorial:block/custom_crop_block_stage0"
      },
      "age=1": {
        "model": "tutorial:block/custom_crop_block_stage0"
      },
      "age=2": {
        "model": "tutorial:block/custom_crop_block_stage1"
      },
      "age=3": {
        "model": "tutorial:block/custom_crop_block_stage1"
      },
      "age=4": {
        "model": "tutorial:block/custom_crop_block_stage2"
      },
      "age=5": {
        "model": "tutorial:block/custom_crop_block_stage2"
      },
      "age=6": {
        "model": "tutorial:block/custom_crop_block_stage3"
      },
      "age=7": {
        "model": "tutorial:block/custom_crop_block_stage3"
      }
    }
  }