def _check_destination_header(req):
 return _check_path_header(req, 'Destination', 2, 'Destination header must be of the form <container name>/<object name>')

def _check_destination_header ( req ) : return _check_path_header ( req , 'Destination' , 2 , 'Destination header must be of the form <container name>/<object name>' )
validate that the value from destination header is well formatted .