Permission card

try {
    consentToken = this.event.context.System.user.permissions.consentToken;
    deviceId = this.event.context.System.device.deviceId;
    apiEndpoint = this.event.context.System.apiEndpoint;

    if(!consentToken || !deviceId || !apiEndpoint) {
        throw("User did not give us permissions to access their address.");
    }

} catch(e) {
    this.emit(":tellWithPermissionCard", Messages.NOTIFY_MISSING_PERMISSIONS, PERMISSIONS);
    // Lets terminate early since we can't do anything else.
    console.log(JSON.stringify(this.event));
    console.error(e);
    console.info("Ending getAddressHandler()");
    return;
}