fixup! fixup! [Pather / RenderPather] move common functionality into PatherMixin; redo hierarchy

masque/builder/renderpather.py

@@ -345,6 +345,17 @@ class RenderPather(PortList, PatherMixin):
 
         return self
 
+    def plugged(
+            self,
+            connections: dict[str, str],
+            ) -> Self:
+        for aa, bb in connections.items():
+            porta = self.ports[aa]
+            portb = self.ports[bb]
+            self.paths[aa].append(RenderStep('P', None, porta.copy(), porta.copy(), None))
+            self.paths[bb].append(RenderStep('P', None, portb.copy(), portb.copy(), None))
+        PortList.plugged(self, connections)
+        return self
 
     def path(
             self,