to_if_held_down

{
    "type": "basic",
    "from": {
        "key_code": "escape",
        "modifiers": {
            "optional": ["caps_lock"]
        }
    },
    "parameters": {
        "basic.to_if_alone_timeout_milliseconds": 250,
        "basic.to_if_held_down_threshold_milliseconds": 250
    },
    "to_if_alone": [
        {
            "key_code": "escape"
        }
    ],
    "to_if_held_down": [
        {
            "shell_command": "open -a 'Alfred 4.app'"
        }
    ]
}