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In nova/compute/manager.py I see:

     def inject_file(self, context, path, file_contents, instance):
         """Write a file to the specified path in an instance on this 
host."""
         # NOTE(russellb) Remove this method, as well as the underlying virt
         # driver methods, when the compute rpc interface is bumped to 4.x
         # as it is no longer used.


The RPC API is at 4.5 as of Liberty. Does that mean it is going soon? I 
couldn't find any deprecation references other than this one.

rob