def pause(self, unique_id, configs=None):
pids = self.get_pid(unique_id, configs)<EOL>if pids != constants.PROCESS_NOT_RUNNING_PID:<EOL><INDENT>pid_str = '<STR_LIT:U+0020>'.join(str(pid) for pid in pids)<EOL>hostname = self.processes[unique_id].hostname<EOL>with get_ssh_client(hostname, username=runtime.get_username(), password=runtime.get_password()) as ssh:<EOL><INDENT>better_exec_command(ssh, "<STR_LIT>".format(pid_str), "<STR_LIT>".format(unique_id))<EOL><DEDENT><DEDENT>
Issues a sigstop for the specified process

        :Parameter unique_id: the name of the process