public List<PhysicsCollisionObject> getOverlappingObjects() {
        overlappingObjects.clear();
        for (com.bulletphysics.collision.dispatch.CollisionObject collObj : gObject.getOverlappingPairs()) {
            overlappingObjects.add((PhysicsCollisionObject) collObj.getUserPointer());
        }
        return overlappingObjects;
    }
Another Object is overlapping with this GhostNode,
if and if only there CollisionShapes overlaps.
They could be both regular PhysicsRigidBodys or PhysicsGhostObjects.
@return All CollisionObjects overlapping with this GhostNode.
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsGhostObject.java