Policy XML parsing failure.

[valdroz]

XacmlPolicyUnmarshallerTest#testPolicy3 and XacmlPolicyUnmarshallerTest#testFeatures001Policy test cases are failing under jdk1.8. Failure happens during policy XML parsing when variable references (e.g. )are used.
Stack trace:
java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:133)
at org.xacml4j.v30.marshal.jaxb.Xacml30PolicyFromJaxbToObjectModelMapper.parseExpression(Xacml30PolicyFromJaxbToObjectModelMapper.java:663)
at org.xacml4j.v30.marshal.jaxb.Xacml30PolicyFromJaxbToObjectModelMapper.createApply(Xacml30PolicyFromJaxbToObjectModelMapper.java:616)

and

java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:133)
at org.xacml4j.v30.marshal.jaxb.Xacml20PolicyFromJaxbToObjectModelMapper.parseExpression(Xacml20PolicyFromJaxbToObjectModelMapper.java:408)
at org.xacml4j.v30.marshal.jaxb.Xacml20PolicyFromJaxbToObjectModelMapper.createApply(Xacml20PolicyFromJaxbToObjectModelMapper.java:655)