Resolve "Inherited components of a type can not be chosen as port targets"

Closes #59 (closed)

ragconnect.base/src/main/jastadd/Analysis.jrag

@@ -101,14 +101,18 @@ aspect Analysis {
   syn boolean TokenComponent.needProxyToken() {
     for (Component comp : meOwnedByOthers()) {
       TokenComponent tokenComp = comp.asTokenComponent();
-      if (!tokenComp.getDependencySourceDefinitionList().isEmpty() ||
-              tokenComp.getTokenPortTargetList().stream()
-                      .map(PortTarget::containingPortDefinition)
-                      .anyMatch(PortDefinition::shouldNotResetValue)) {
+      if (tokenComp.directNeedProxyToken()) {
         return true;
       }
     }
-    return false;
+    return directNeedProxyToken();
+  }
+
+  syn boolean TokenComponent.directNeedProxyToken() {
+    return !getDependencySourceDefinitionList().isEmpty() ||
+              getTokenPortTargetList().stream()
+                .map(PortTarget::containingPortDefinition)
+                .anyMatch(PortDefinition::shouldNotResetValue);
   }
 
   // --- effectiveUsedAt ---