Flex 4 NavigatorContent Inherited creationPolicy set to none

In Flex 4 in a TabNavigator container if the TN creationPolicy is auto,开发者_运维百科 which it is by default, then the creationPolicy of any NavigatorContent containers in the TN will be none.

Two questions:

1) What are the implications of NavigatorContent creationPolicy being none in this case, because its children still get created.

2) Why does it inherit a policy of none if the TN has one of auto? I saw how this is done in NavigatorContent.as, but why?

The creation policy of the NavigatorContent container is based on the creation policy of its parent navigator container.

please refer the language reference for NavigatorContent