Source for built-in NetConnection component?

I've been reading the source code for the Flash Remoting Components which is found here:
http://www.adobe.com/products/flashr...nents/#flr_as2

Connection.as extends NetConnection.as which appears to be a class native to Flash. The source code for it is not included with the download and I can't find the source for it on my hard drive anywhere. I searched my entire hard drive and found two classes that appear to be just interfaces -- they don't do anything (see below). Where is the source for the NetConnection class?

I also found a file called NetConnection.aso which appears to be some kind of compiled binary file. I'm guessing the functionality is inside it.

Where can I found out more about what this does?
// C:\Program Files\Macromedia\Flash MX 2004\en\First Run\Classes\NetConnection.as

Code:

---

intrinsic class NetConnection extends Object {
        var isConnected:Boolean;
        var uri:String;

        function getDebugConfig( id ):NetDebugConfig;
        function getDebugID();
        function getService( serviceAddress, responder ):Object;
        function setCredentials( principal:String, password: String ):Void;
        function setDebugID( id ):Void;
        function trace( obj ):Void;
       
        function connect(targetURI:String):Boolean;
        function close():Void;
        function call(remoteMethod:String, resultObject:Object):Void;
        function addHeader();
       
        function onStatus(infoObject:Object):Void;
        function onResult(infoObject:Object):Void;       
}

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C:\Documents and Settings\Jaithe\Local Settings\Application Data\Macromedia\Flash MX 2004\en\Configuration\Classes\NetConnection.as

Code:

---

//****************************************************************************
// ActionScript Standard Library
// NetConnection object
//****************************************************************************
         
dynamic intrinsic class NetConnection
{
        var isConnected:Boolean;
        var uri:String;

        function NetConnection();
       
        function addHeader();
        function call(remoteMethod:String, resultObject:Object):Void;
        function close():Void;
        function connect(targetURI:String):Boolean;
       
        function onResult(infoObject:Object):Void;       
        function onStatus(infoObject:Object):Void;
}

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