The IUID interface defines the interface for objects that must have
Unique Identifiers (UIDs) to uniquely identify the object.
UIDs do not need to be universally unique for most uses in Flex.
One exception is for messages send by data services.
uid:String
[read-write]
The unique identifier for this object.
Implementation
public function get uid():String
public function set uid(value:String):void
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