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?

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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