openapi-generator/modules/openapi-generator-maven-plugin/examples/multi-module/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>
    <groupId>org.openapitools</groupId>
    <artifactId>multi-parent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>parent-project</name>
    <url>https://maven.apache.org</url>

    <modules>
        <module>sample-schema</module>
        <module>java-client</module>
    </modules>

    <properties>
        <swagger-annotations-version>1.5.8</swagger-annotations-version>
        <jersey-version>2.35</jersey-version>
        <jackson-version>2.17.1</jackson-version>
        <jackson-databind-nullable-version>0.2.1</jackson-databind-nullable-version>
        <jodatime-version>2.7</jodatime-version>
        <maven-plugin-version>1.0.0</maven-plugin-version>
        <junit-version>5.10.2</junit-version>
        <http-signature-version>1.4</http-signature-version>
    </properties>
</project>