How to override source paths properly?

[puskarpeter]

Currently I am using configuration like this

<plugin>
    <groupId>com.github.gantsign.maven</groupId>
    <artifactId>ktlint-maven-plugin</artifactId>
    <version>3.2.0</version>
    <configuration>
        <experimental>true</experimental>
        <sourceRoots>
            <sourceRoot>${project.basedir}/src/main/kotlin</sourceRoot>
        </sourceRoots>
        <testSourceRoots>
            <sourceRoot>${project.basedir}/src/test/kotlin</sourceRoot>
        </testSourceRoots>
    </configuration>
    <executions>
        <execution>
            <id>check</id>
            <goals>
                <goal>check</goal>
            </goals>
        </execution>
    </executions>
</plugin>

Since the project contains combined Java and Kotlin sources, but all Kotlin sources are in the folder structure above.
This works, but I am getting these warnings:

[WARNING]  Parameter 'sourceRoots' is read-only, must not be used in configuration
[WARNING]  Parameter 'testSourceRoots' is read-only, must not be used in configuration

If it is read-only, I do not know why it works (maybe it is not enforced), but I did not find any simpler solution.
Should I configure the plugin in some other way or maybe from the plugin side these parameters should have read-only=false?

[fan-tom]

I guess it is due to this bug in maven https://issues.apache.org/jira/browse/MNG-5001, but once it is fixed, I also don't understand how should I configure sources for this plugin.

Also, it seems suboptimal that we should specify them manually in the first place, given that we (presumably) already use kotlin-maven-plugin to compile kotlin, which means source roots has already been configured by it, so ideally we shouldn't configure anything for ktlint plugin itself, but IDK whether it is possible to implement in maven