我们如何在Mule中解码压缩格式的base64编码的字符串？

<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:compression="http://www.mulesoft.org/schema/mule/compression" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
    xmlns:spring="http://www.springframework.org/schema/beans" version="CE-4.4.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
    http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
    http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
    http://www.mulesoft.org/schema/mule/compression http://www.mulesoft.org/schema/mule/compression/current/mule-compression.xsd">

    <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
    
    <flow name="decode-compressed-base64-flow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/decode" doc:name="HTTP"/>
        <set-payload value="#[message.payloadAs(java.lang.String)]" doc:name="Set Payload"/>
        <expression-component doc:name="Decode Base64">
            <![CDATA[
                import org.apache.commons.codec.binary.Base64;
                import java.util.zip.Inflater;
                import java.io.ByteArrayOutputStream;
                import java.io.IOException;

                byte[] compressedData = Base64.decodeBase64(payload);
                Inflater inflater = new Inflater();
                inflater.setInput(compressedData);

                ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                byte[] buffer = new byte[1024];
                while (!inflater.finished()) {
                    int count = inflater.inflate(buffer);
                    outputStream.write(buffer, 0, count);
                }
                inflater.end();

                String decodedData = new String(outputStream.toByteArray(), "UTF-8");
                message.payload = decodedData;
            ]]>
        </expression-component>
    </flow>
</mule>