如何在mule 3.9.1中发送苹果推送通知？

<dependency>
    <groupId>org.mule.modules</groupId>
    <artifactId>mule-module-apns</artifactId>
    <version>1.7.0</version>
</dependency>

<mule xmlns:apns="http://www.mulesoft.org/schema/mule/apns" xsi:schemaLocation="http://www.mulesoft.org/schema/mule/apns http://www.mulesoft.org/schema/mule/apns/current/mule-apns.xsd">
    ...
    <apns:config name="APNS_Config" certificatePath="path/to/certificate.p12" certificatePassword="password" sandbox="false"/>
    ...
</mule>

<flow name="sendAPNSNotificationFlow">
    <http:listener config-ref="HTTP_Listener_Configuration" path="/send-apns-notification" doc:name="HTTP"/>
    <set-payload value="#[message.payloadAs(java.lang.String)]" doc:name="Set Payload"/>
    <apns:send-notification config-ref="APNS_Config" doc:name="APNS"/>
</flow>

{
    "deviceToken": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "alert": "Hello from Mule!",
    "badge": 1,
    "sound": "default"
}