private void serializeProperty(NFBuildGraphNode node, NFPropertySpec propertySpec) {
   if (propertySpec.isConnectionModelSpecific()) {
     for (int i = 0; i < modelHolder.size(); i++) {
       serializeProperty(node, propertySpec, i, modelBuffer);
     }
     copyBuffer(modelBuffer, graphBuffer);
   } else {
     serializeProperty(node, propertySpec, 0, graphBuffer);
   }
 }