private List<KamEdge> findEdge(final String kamName,
final RelationshipType r) {
assertThat(kamName, is(not(nullValue())));
assertThat(r, is(not(nullValue())));
final KamHandle handle = loadKam(kamName);
EdgeFilter f = factory.createEdgeFilter();
RelationshipTypeFilterCriteria c = factory
.createRelationshipTypeFilterCriteria();
c.getValueSet().add(r);