I'm attempting to inject a simple NullPointerException in a method using BMUnit

@BMRule(targetClass = "org.hibernate.search.batchindexing.impl.IdentifierConsumerEntityProducer",
			targetMethod = "loadList",
			action = "throw new NullPointerException()",
			name = "testMassIndexerErrorsReported")

Rule.ensureTypeCheckedCompiled : error type checking rule testMassIndexerErrorsReported
org.jboss.byteman.rule.exception.TypeException: ThrowExpression.typeCheck : exception type not declared by trigger method NullPointerException file org.hibernate.search.test.batchindexing.MassIndexerErrorReportingTest+testMassIndexerErrorsReported line 6
at org.jboss.byteman.rule.expression.ThrowExpression.checkThrownTypeIsValid(ThrowExpression.java:414)
at org.jboss.byteman.rule.expression.ThrowExpression.typeCheck(ThrowExpression.java:176)
at org.jboss.byteman.rule.Action.typeCheck(Action.java:106)
at org.jboss.byteman.rule.Rule.typeCheck(Rule.java:523)
at org.jboss.byteman.rule.Rule.ensureTypeCheckedCompiled(Rule.java:449)
at org.jboss.byteman.rule.Rule.execute(Rule.java:670)
at org.jboss.byteman.rule.Rule.execute(Rule.java:651)
at org.hibernate.search.batchindexing.impl.IdentifierConsumerEntityProducer.loadList(IdentifierConsumerEntityProducer.java)
at org.hibernate.search.batchindexing.impl.IdentifierConsumerEntityProducer.loadAllFromQueue(IdentifierConsumerEntityProducer.java:117)
at org.hibernate.search.batchindexing.impl.IdentifierConsumerEntityProducer.run(IdentifierConsumerEntityProducer.java:94)
at org.hibernate.search.batchindexing.impl.OptionallyWrapInJTATransaction.run(OptionallyWrapInJTATransaction.java:112)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

Looking into org.jboss.byteman.rule.expression.ThrowExpression.checkThrownTypeIsValid() I guess it should return without throwing an exception