def get_host(self, unique_id):
if unique_id in self.processes:<EOL><INDENT>return self.processes[unique_id].hostname<EOL><DEDENT>logger.error("<STR_LIT>".format(unique_id))<EOL>raise NameError("<STR_LIT>".format(unique_id))<EOL>
Gets the host of the process with `unique_id`.  If the deployer does not know of a process
        with `unique_id` then it should return a value of SOME_SENTINAL_VALUE

        :Parameter unique_id: the name of the process
        :raises NameError if the name is not  valid process