public void batchUnrelate(boolean notifyChanges) {
   NonRootModelElement inst = null;
   // R603
   // ACT_SMT
   inst = IsSupertypeStatement;
   unrelateAcrossR603From(IsSupertypeStatement, notifyChanges);
   if (inst != null) {
     inst.removeRef();
   }
   // R674
   // S_BRG
   inst = IsAnInvocationOfBridge;
   unrelateAcrossR674From(IsAnInvocationOfBridge, notifyChanges);
   if (inst != null) {
     inst.removeRef();
   }
 }
 public void unrelateAcrossR603From(Statement_c target) {
   unrelateAcrossR603From(target, true);
 }