def prefix(self, command):
        return nested(* [ h.host_context.prefix(command) for h in self._all ])
Add a value to the end of the list for the named header.
dataset/ETHPy150Open jonathanslenders/python-deployer/deployer/host_container.py/HostsContainer.prefix--crossover with--dataset/ETHPy150Open armet/python-armet/armet/http/response.py/Headers.append