OBJParser trims material names?

[ghost]

Hi! Noticed that mesh's material name contains only "Obj0" instead of real material name, as "coolSong".
I'm trying to get the materials names with this code:

//...
Loader3D.enableParser(OBJParser);
_loader = new Loader3D();
_loader.addEventListener(LoaderEvent.RESOURCE_COMPLETE, onResourceComplete);
_loader.load(new URLRequest('model.obj'));
//...

private function onResourceComplete(ev: LoaderEvent) : void
{
    //...
    var len: uint = _loader.numChildren;
    for (var i: uint = 0; i < len; i++) 
    {
        //...
        mesh = Mesh(_loader.getChildAt(i));
        trace(mesh.material.name); // traces "Obj0", "Obj1", etc
        //...
    }
    //...
}

I debugged names resolving process a bit and figured out some strange behavior in the OBJParser:
In the away3d.loaders.parsers.OBJParser:
https://github.com/away3d/away3d-core-broomstick/blob/master/src/away3d/loaders/parsers/OBJParser.as
In the method translate(), this code:

if(groups[g].materialID != "")
{
    bmMaterial.name = groups[g].materialID+"~"+mesh.name;
}
else
{
    bmMaterial.name = _lastMtlID+"~"+mesh.name;
}

generates material names like "coolSong~Obj1".
And after it, at the applyMaterial() method:

//...
decomposeID = mesh.material.name.split("~");
//...
mesh.material.name = decomposeID[1];

Name replaced with it's second part after a "~" char and looks after it like "Obj1"

So, name after translate() is looks like: "coolSongObj1";
And after applyMaterial() it changes for "Obj1" (because used part after the "" char - decomposeID[1]);
But in this case material name is erased at all, leaving just the mesh name I guess =(
Why not to use the decomposeID[0] instead of decomposeID[1] to leave the material name only (erasing the mesh name) or leave the whole name "coolSong~Obj1"?