Computers - Describe the usage of this code ```ts export interface AppSettings { title: string; version: number; } export const APP_SETTINGS = new InjectionToken<AppSettings>('app.settings'); ```

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Describe the usage of this code

export interface AppSettings {
  title: string;
  version: number;
}
export const APP_SETTINGS = new InjectionToken<AppSettings>('app.settings');

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