{
    "type": "computercraft:impostor_shaped",
    "group": "computercraft:upgrade_pocket_${pocket_family}",
    "pattern": [
        "#",
        "T"
    ],
    "key": {
        "#": { "item": "${upgrade_item}" },
        "T": { "item": "computercraft:pocket_computer_${pocket_family}" }
    },
    "result": { "item": "computercraft:pocket_computer_${pocket_family}", "nbt": { "Upgrade": "${upgrade_id}" } }
}