apxml object reference?

I've checked the DevGuide and the IntegrationAgent guide, but I can't seem to find an object reference for the apxml object.

I know that I can use certain ?methods?, eg:

apxml.setValue() and

apxml.getValue()

But I'm wondering what other methods are available, and in this particular case I am specifically looking to be able to remove a token, a la:

apxml.removeToken("tokenname") or similar...

Thanks in advance!