autoCommit not configurable via XML

It throws:

Caused by: com.sun.xml.internal.bind.api.AccessorException: The property has a getter "public java.lang.Boolean org.infinispan.config.Configuration$TransactionType.isAutoCommit()" but no setter. For unmarshalling, please define setters. (Or if this is a collection property, make sure that the getter returns a collection instance.)
at com.sun.xml.internal.bind.v2.runtime.reflect.Accessor$GetterOnlyReflection.set(Accessor.java:379)
at com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor$CompositeTransducedAccessorImpl.parse(TransducedAccessor.java:230)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StructureLoader.startElement(StructureLoader.java:191)