Stackoverflow when using groups without defining xjcVersion

[egaga]

If xjcVersion.set("2.3.3") (or 3.0.0) is omitted when using groups to define multiple schema generations, the gradle build fails mysteriously with:

java.lang.StackOverflowError
        at org.gradle.api.internal.provider.AbstractProperty.getProducer(AbstractProperty.java:178)
        at org.gradle.api.internal.provider.AbstractProperty.getProducer(AbstractProperty.java:178)
        at org.gradle.api.internal.provider.AbstractProperty.getProducer(AbstractProperty.java:178)
(and so on...)

This should not be the case as the documentation says: "It has been tested with XJC version 2.3.3 and 3.0.0 (from Jakarta EE). Defaults to 2.3.3."

Example something like this:

groups {
        markGenerated.set(true)
        register("MyXJC") {
            xsdDir.set(layout.projectDirectory.dir("src/main/resources/jaxb"))
            defaultPackage.set("com.something.foobar")
            xsdFiles = project.files(xsdDir.file("Something.xsd"))
            outputJavaDir.set(layout.projectDirectory.dir("src/generated/java/xjc/"))
        }
 }

Tested with xjc-gradle-plugin 1.6.0.

As a personal anectode because of this I tried to create alternative way to configure multiple tasks which have independent xjc definitions but that failed as it seems that the last configuration of xjc was solely picked.

[evantill]

could we make a PR for this ?