code: protected void preInstantiate(Object name, Map attributes, Object value) {
          for (Closure preInstantiateDelegate : getProxyBuilder().getPreInstantiateDelegates()) {
              (preInstantiateDelegate).call(new Object[]{this, attributes, value});
          }
      }
docs: A hook before the factory creates the node.<br>
  It will call any registered preInstantiateDelegates, if you override this
  method be sure to call this impl somewhere in your code.
  
  @param name       the name of the node
  @param attributes the attributes of the node
  @param value      the value argument(s) of the node