| 110 | pass |
| 111 | |
| 112 | class Backend(Node): |
| 113 | scheme = { |
| 114 | 'shape': 'folder', |
| 115 | 'width': 2, |
| 116 | 'height': 1, |
| 117 | 'color': 'black', |
| 118 | 'fillcolor': 'peachpuff3', |
| 119 | } |
| 120 | |
| 121 | def label(self): |
| 122 | return generic_label(self) if generic else self._label |
| 123 | |
| 124 | class Broker(Node): |
| 125 | scheme = { |