skip publish if artifact already exists

[sagun]

Hi,

Is it possible to skip publishing artifacts/ivy files to the repository 
if the revision number expected is already present in the repository. I 
know you can set 'overwrite' to true but I wanted to know if it would be 
possible to skip the publish instead overwritting. Currently if 
overwrite is set to false then the build fails with "destination 
probably already exists and overwrite is false"

Thanks,

Sagun