def get_valid_os_versions_for_breed(breed):
 os_versions = []
 if (breed in get_valid_breeds()):
  os_versions = SIGNATURE_CACHE['breeds'][breed].keys()
 return os_versions

def get_valid_os_versions_for_breed ( breed ) : os_versions = [ ] if ( breed in get_valid_breeds ( ) ) : os_versions = SIGNATURE_CACHE [ 'breeds' ] [ breed ] . keys ( ) return os_versions
return a list of valid os-versions for the given breed .