pom.xml with custom packaging

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <parent>
        <groupId>org.example</groupId>
        <artifactId>parent</artifactId>
        <version>1</version>
    </parent>
    
    <groupId>org.example.resources</groupId>
    <artifactId>res_all</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>composite-resources</packaging>
    
    <!-- 
     | res/static/{res1, res2, res3} and current artifact's res/static/res_all get copied over 
     | and repackaged as resources/static/res_all
     -->
    <properties>
        <resources.base>res/static/</resources.base>
        <resources.module>${project.artifactId}</resources.module>
        <resources.composition>
            ${resources.base}/res1,
            ${resources.base}/res2,
            ${resources.base}/res3
        </resources.composition>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.example.resources</groupId>
            <artifactId>res1</artifactId>
            <version>1.0-SNAPSHOT</version>
            <type>zip</type>
        </dependency>
        <dependency>
            <groupId>org.example.resources</groupId>
            <artifactId>res2</artifactId>
            <version>1.0</version>
            <type>zip</type>
        </dependency>
        <dependency>
            <groupId>org.example.resources</groupId>
            <artifactId>res3</artifactId>
            <version>1.0</version>
            <type>zip</type>
        </dependency>
    </dependencies>

</project>