(&mut self, label: &str)
| 155 | } |
| 156 | |
| 157 | pub fn pre_visit_plan(&mut self, label: &str) -> fmt::Result { |
| 158 | self.graphviz_builder.start_cluster(self.f, label) |
| 159 | } |
| 160 | |
| 161 | pub fn post_visit_plan(&mut self) -> fmt::Result { |
| 162 | self.graphviz_builder.end_cluster(self.f) |