## [Settings](https://developers.google.com/maps/documentation/javascript/reference/settings.md.txt#Settings) class class `google.maps.Settings` library `"core"` Settings which control the behavior of the Maps JavaScript API as a whole. ```javascript const {Settings} = await google.maps.importLibrary("core"); ``` | ### Static Methods || |---|---| | `getInstance` | `getInstance()` **Parameters:** None **Return Value:** `Settings` Returns the singleton instance of `google.maps.Settings`. | | ### Properties || |---|---| | `contentTokens` readonly | > [!WARNING] > **Notice:** Available only in the [v=beta channel](https://developers.google.com/maps/documentation/javascript/versions.md.txt#choosing-the-beta-channel). **Type:** `Iterable` A collection of unique content tokens generated by other services. The returned value is a copy of the internal value that is stored in the `Settings` instance. Operations on `.contentTokens` will therefore only modify the copy and not the internal value. To update the internal value, use `addContentTokens()` on the singleton instance (ex: `Settings.getInstance().addContentTokens([token])`). | | `experienceIds` readonly | > [!WARNING] > **Notice:** Available only in the [v=beta channel](https://developers.google.com/maps/documentation/javascript/versions.md.txt#choosing-the-beta-channel). **Type:** `Iterable` A collection of unique experience IDs to which to attribute Maps JS API calls. The returned value is a copy of the internal value that is stored in the `Settings` class singleton instance. Operations on `google.maps.Settings.getInstance().experienceIds` will therefore only modify the copy and not the internal value. To update the internal value, set the property equal to the new value on the singleton instance (ex: `google.maps.Settings.getInstance().experienceIds = [experienceId];`). | | `fetchAppCheckToken` | **Type:** `function(): Promise` Set this property to a function that returns a promise which resolves to a Firebase App Check token result. | | ### Methods || |---|---| | `addContentTokens` | > [!WARNING] > **Notice:** Available only in the [v=beta channel](https://developers.google.com/maps/documentation/javascript/versions.md.txt#choosing-the-beta-channel). `addContentTokens(contentTokens)` **Parameters:** - `contentTokens: Iterable optional` **Return Value:** `void` Registers content tokens. | ## [MapsAppCheckTokenResult](https://developers.google.com/maps/documentation/javascript/reference/settings.md.txt#MapsAppCheckTokenResult) interface interface `google.maps.MapsAppCheckTokenResult` Describes a Firebase App Check token result. | ### Properties || |---|---| | `token` | **Type:** `string` The Firebase App Check token. |