// V1.0 of versionableNode has no child
Node child1 = versionableNode.addNode(nodeName4);
ensureMixinType(child1, mixVersionable);
versionableNode.getSession().save();
// create v1.0 of child
Version v1Child = child1.checkin();
// V1 of versionable node has child1
String v1 = versionManager.checkin(versionableNode.getPath()).getName();
// create V1.1 of child