# Lists

To track an event using the lists package, you can use the corresponding method on the tracker instance. For example:

## Example

{% tabs %}
{% tab title="Android" %}

```kotlin
val properties = ListsSubscribedProperties(
    listId = listId
)
bird.tracker.lists.subscribed(properties)
```

{% endtab %}

{% tab title="Swift" %}

```swift
let properties = ListsSubscribedProperties(
    listId: listId
)
bird.tracker.lists.subscribed(properties)
```

{% endtab %}

{% tab title="Web" %}

```javascript
const properties: ListsSubscribedProperties = {
    list_id: list_id
};
Bird.tracker.lists.subscribed(properties, event_opts);
```

{% endtab %}
{% endtabs %}

## Methods

### subscribed()

{% tabs %}
{% tab title="Android" %}

```kotlin
val properties = ListsSubscribedProperties(
    listId = listId
)
bird.tracker.lists.subscribed(properties)
```

{% endtab %}

{% tab title="Swift" %}

```swift
let properties = ListsSubscribedProperties(
    listId: listId
)
bird.tracker.lists.subscribed(properties)
```

{% endtab %}

{% tab title="Web" %}

```javascript
const properties: ListsSubscribedProperties = {
    list_id: list_id
};
Bird.tracker.lists.subscribed(properties, event_opts);
```

{% endtab %}
{% endtabs %}

#### ListsSubscribedProperties

| Property  | Type   |
| --------- | ------ |
| list\_id? | String |
| source?   | String |

### unsubscribed()

{% tabs %}
{% tab title="Android" %}

```kotlin
val properties = ListsUnsubscribedProperties(
    listId = listId
)
bird.tracker.lists.unsubscribed(properties)
```

{% endtab %}

{% tab title="Swift" %}

```swift
let properties = ListsUnsubscribedProperties(
    listId: listId
)
bird.tracker.lists.unsubscribed(properties)
```

{% endtab %}

{% tab title="Web" %}

```javascript
const properties: ListsUnsubscribedProperties = {
    list_id: list_id
};
Bird.tracker.lists.unsubscribed(properties, event_opts);
```

{% endtab %}
{% endtabs %}

#### ListsUnsubscribedProperties

| Property  | Type   |
| --------- | ------ |
| list\_id? | String |
| source?   | String |