RuntimeException: Unknown expression type: java.lang.String.class thrown by executable-model

                when
                    Primitives( eval(classAttr.equals( java.lang.String.class ) ) )

[ERROR] testJBRULES_2995[KieBase type=CLOUD_IDENTITY_MODEL_PATTERN](org.drools.mvel.integrationtests.JBRULESTest)  Time elapsed: 1.001 s  <<< ERROR!
java.lang.RuntimeException: Unknown expression type: java.lang.String.class
	at org.drools.modelcompiler.builder.generator.DrlxParseUtil.getExpressionType(DrlxParseUtil.java:271)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.processFirstNode(ExpressionTyper.java:628)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.toTypedExpressionFromMethodCallOrField(ExpressionTyper.java:412)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.parseNodeArguments(ExpressionTyper.java:790)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.parseMethodCallExpr(ExpressionTyper.java:719)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.methodCallExpr(ExpressionTyper.java:707)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.toTypedExpressionFromMethodCallOrField(ExpressionTyper.java:443)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.toTypedExpressionRec(ExpressionTyper.java:221)
	at org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyper.toTypedExpression(ExpressionTyper.java:149)
	at org.drools.modelcompiler.builder.generator.drlxparse.ConstraintParser.getDrlxParseResult(ConstraintParser.java:172)
	at org.drools.modelcompiler.builder.generator.drlxparse.ConstraintParser.drlxParse(ConstraintParser.java:102)
	at org.drools.modelcompiler.builder.generator.visitor.pattern.PatternDSL.findAllConstraint(PatternDSL.java:136)
	at org.drools.modelcompiler.builder.generator.visitor.pattern.PatternDSL.buildPattern(PatternDSL.java:235)
	at org.drools.modelcompiler.builder.generator.visitor.ModelGeneratorVisitor.visit(ModelGeneratorVisitor.java:145)
	at org.drools.compiler.lang.descr.PatternDescr.accept(PatternDescr.java:288)
	at org.drools.modelcompiler.builder.generator.visitor.AndVisitor.visit(AndVisitor.java:50)
	at org.drools.modelcompiler.builder.generator.visitor.ModelGeneratorVisitor.visit(ModelGeneratorVisitor.java:86)
	at org.drools.modelcompiler.builder.generator.ModelGenerator.processRule(ModelGenerator.java:187)
	at org.drools.modelcompiler.builder.generator.ModelGenerator.generateModel(ModelGenerator.java:160)
	at org.drools.modelcompiler.builder.ModelBuilderImpl.compileKnowledgePackages(ModelBuilderImpl.java:284)
	at org.drools.modelcompiler.builder.ModelBuilderImpl.buildRules(ModelBuilderImpl.java:220)
	at org.drools.modelcompiler.builder.ModelBuilderImpl.postBuild(ModelBuilderImpl.java:130)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:111)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:97)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.buildKnowledgePackages(AbstractKieProject.java:268)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.buildKnowledgePackages(AbstractKieProject.java:216)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:80)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:279)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:247)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:204)
	at org.drools.testcoverage.common.util.KieUtil.getKieBuilderFromKieFileSystem(KieUtil.java:129)
	at org.drools.testcoverage.common.util.KieUtil.buildAndInstallKieModuleIntoRepo(KieUtil.java:70)
	at org.drools.testcoverage.common.util.KieUtil.buildAndInstallKieModuleIntoRepo(KieUtil.java:64)
	at org.drools.testcoverage.common.util.KieUtil.getKieModuleFromResources(KieUtil.java:231)
	at org.drools.testcoverage.common.util.KieUtil.getKieModuleFromResources(KieUtil.java:220)
	at org.drools.testcoverage.common.util.KieBaseUtil.getKieBaseFromKieModuleFromResources(KieBaseUtil.java:99)
	at org.drools.testcoverage.common.util.KieBaseUtil.getKieBaseFromKieModuleFromDrl(KieBaseUtil.java:112)
	at org.drools.mvel.integrationtests.JBRULESTest.testJBRULES_2995(JBRULESTest.java:148)