Adobe Flex 4 * Creating deferred components

When you set a container’s creationPolicy property to none, components declared as MXML tags inside that container are not created.

For Spark containers, you use the createDeferredContent() method to manually instantiate deferred components. This method is defined on the spark.components.SkinnableContainer class.

For MX containers, you use the createComponentsFromDescriptors() method to manually instantiate deferred components. This method is defined on the MX Container base class.