When a class extends AbstractSolution class & JAXB marshaling is used, the following exception is thrown:

Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
org.optaplanner.core.api.score.Score is an interface, and JAXB can't handle interfaces.
this problem is related to the following location:
at org.optaplanner.core.api.score.Score
at public org.optaplanner.core.api.score.Score org.optaplanner.core.impl.domain.solution.AbstractSolution.getScore()
at org.optaplanner.core.impl.domain.solution.AbstractSolution
at org.optaplanner.persistence.jaxb.impl.testdata.domain.JaxbTestdataAbstractSolution

at com.sun.xml.bind.v2.runtime.IllegalAnnotationsException$Builder.check(IllegalAnnotationsException.java:106)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:460)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:292)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:139)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1138)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:162)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:247)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:234)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:441)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:641)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:584)
at org.optaplanner.persistence.jaxb.impl.domain.solution.JaxbSolutionFileIO.<init>(JaxbSolutionFileIO.java:48)
... 29 more