if no ILayoutParent, assume strand is ContentView
ToggleButtonModel is also ITextModel
handle child descriptors differently.  Push them into child container so child can generate when needed
switch target to be string reference
these need to be event dispatchers
handle initial state
handle stateGroups
Container should have default border bead
handle initial state
need to get model this way in case it hasn't been instantiated and placed on beads list yet
get model directly
some children are not display objects.  Might be an fx:Declaration
handle vent handlers in states
parse styles as strings
need to set styleparent
handle state vars on the top tag
use valueChange instead of valueChanged