rmi client item is neither node nor property

In the repositorymapimpl, the following code (lines 355 - 358):

if (found.isNode())

{ return new RepositoryMapImpl((Node)found); }

else {
Property property = (Property)found;

lead to

java.lang.ClassCastException: org.apache.jackrabbit.rmi.client.ClientItem cannot be cast to javax.jcr.Property
at org.hippoecm.repository.RepositoryMapImpl.get(RepositoryMapImpl.java:358)
at org.hippoecm.repository.RepositoryMapTest.testMapProperty(RepositoryMapTest.java:76)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

in the repositorymaptest.