Fix #67

src/param/param-definition.ts

-import { CalculatorType } from "../compute-node";
+import { CalculatorType, ComputeNode } from "../compute-node";
 import { Nub } from "../nub";
 import { Interval } from "../util/interval";
 import { Message, MessageCode } from "../util/message";
@@ -108,6 +108,17 @@ export class ParamDefinition implements INamedIterableValues, IObservable {
         return this.nubUid + "_" + this._symbol;
     }
 
+    get parentComputeNode(): ComputeNode {
+        let parentCN: ComputeNode;
+        if (this._parent) {
+            // ComputeNode utilisant le ParamsEquation
+            parentCN = this._parent.parent;
+        } else {
+            throw new Error("ParamDefinition.parentNub : parameter has no parent !");
+        }
+        return parentCN;
+    }
+
     /**
      * Identifiant unique du Nub parent
      */

src/structure/structure.ts

@@ -266,10 +266,4 @@ export abstract class Structure extends Nub {
         }
     }
 
-    protected setExtraResultsFamilies() {
-        this._extraResultsFamilies = {
-            Q: ParamFamily.FLOWS
-        };
-    }
-
 }