How to clone a data structure object (ExtendScript)?

Hi,

Is there some quick way to clone a data structure, like a text range, rather than doing all this:

newTR = new TextRange();

newTR.beg.obj = oldTR.beg.obj;

newTR.beg.offset = oldTR.beg.offset;

newTR.end.obj = oldTR.end.obj;

newTR.end.offset = oldTR.end.offset;

I tried this, but it failed as I expected:

newTR = oldTR.clone();

I tried this, but I got back the same object:

newTR = new TextRange(oldTR.beg, oldTR.end);

Any ideas?

Thanks,

Russ