Getting values from other Datapoints in Groovy ComplexDatapoint

Seems like a no-brainer to support that, right?  The only way you could as it stands is via API calls, which, without library support, is a non-starter for me.  It could be done if you want to maintain many copies of the same code across modules (which seems to be the norm now, except they are all slightly different based on who writes them as you would expect).