Convert the Selectors within this container to a string. This will just be a helper class for the subclasses that put their own name around the contents listed here.
<p>This implementation validates the container by calling verifySettings() and then validates each contained selector provided that the selector implements the validate interface.
Check to see whether any DataType we hold references to is included in the Stack (which holds all DataType instances that directly or indirectly reference this instance, including this instance itself).
Overrides BaseSelectorContainer::toString() (Convert the Selectors within this container to a string. This will just be a helper class for the subclasses that put their own name around the contents listed here.)