(self, *args, **kwargs)
| 1159 | return chord(self.tasks, task) |
| 1160 | |
| 1161 | def error(self, *args, **kwargs): |
| 1162 | # Apply error handler to all tasks. |
| 1163 | for task in self.tasks: |
| 1164 | task.error(*args, **kwargs) |
| 1165 | return self |
| 1166 | |
| 1167 | |
| 1168 | class chord(object): |