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I'm working on moving the functionality for merging environments from 
the client into the server [1]. I've only superficially looked at 
template_utils.py (in heatclient) but I'm guessing there is stuff in 
there I will want to use server-side.

The server has a requirement on heatclient, but I'm not sure what the 
convention is for using code in it. Can I directly call into a module in 
heatclient/common from the server or is the client dependency only 
intended to be used through the client-facing APIs?

[1] https://blueprints.launchpad.net/heat/+spec/multi-environments

Thanks :)