At the conclusion of a build using ant build I would like to change the owner of a stream if the build was unsuccessful to stop anyone from delivering changesets to the stream until the build problem is resolved. I see where there is an example of changing the owner on a component but not for a stream.

Is there a way to change the stream owner from a batch job - and/or is there a better way to prevent stream deliveries while working out the build problem? The intent is to run the build a continuous regular intervals.