Device -> UClass (name = Device)
D -> [!] UnknownKotlinExpression (TYPE_PARAMETER)
Device -> USimpleNameReferenceExpression (identifier = Device)
D -> USimpleNameReferenceExpression (identifier = D)
a -> UField (name = a)
as? -> USimpleNameReferenceExpression (identifier = as?)
Device -> USimpleNameReferenceExpression (identifier = Device)