OverlayState class
- Constructors
 - OverlayState
 - Properties
 - context
 - hashCode
 - mounted
 - runtimeType
 - widget
 - Methods
 - build
 - debugFillProperties
 - debugIsVisible
 - initState
 - insert
 - insertAll
 - createTicker
 - deactivate
 - didChangeDependencies
 - didUpdateWidget
 - dispose
 - noSuchMethod
 - reassemble
 - setState
 - toDiagnosticsNode
 - toString
 - toStringShort
 - Operators
 - operator ==