@Override
 public ArrayMap<Integer, RelIdArray> getCowRelationshipAddMap(NodeImpl node) {
   PrimitiveElement primitiveElement = getPrimitiveElement(false);
   if (primitiveElement == null) {
     return null;
   }
   CowNodeElement element = primitiveElement.nodeElement(node.getId(), false);
   return element != null ? element.relationshipAddMap : null;
 }
 @Override
 public boolean relationshipIsDeleted(long relationshipId) {
   if (primitiveElement == null) {
     return false;
   }
   CowRelElement relationshipElement = primitiveElement.relationshipElement(relationshipId, false);
   return relationshipElement != null && relationshipElement.isDeleted();
 }
  @Override
  public boolean nodeIsDeleted(long nodeId) {
    if (primitiveElement == null) {
      return false;
    }

    CowNodeElement nodeElement = primitiveElement.nodeElement(nodeId, false);
    return nodeElement != null && nodeElement.isDeleted();
  }
 @Override
 public void deleteRelationship(long id) {
   PrimitiveElement element = getPrimitiveElement(true);
   element.relationshipElement(id, true).setDeleted();
 }
 @Override
 public void deleteNode(long id) {
   PrimitiveElement element = getPrimitiveElement(true);
   element.nodeElement(id, true).setDeleted();
 }