Source Java files are added to generated jar when using hibernate-jpamodelgen to generate JPA static meta model classes

Question

I added the following dependency to my pom.xml so that my static meta model classes can be generated for my JPA entities. The meta model classes are generated as expected. However, I observed that the generated source files for the generated classes are also included in the jar as well. How do I make maven exclude the generated source files from being bundled in the jar as well.

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-jpamodelgen</artifactId>
        <version>${hibernate.version}</version>
        <scope>compile</scope>
        <optional>true</optional>
    </dependency>