docs: public void setStart(Parameter newStart) {
  		if (newStart != start) {
  			NotificationChain msgs = null;
  			if (start != null)
  				msgs = ((InternalEObject)start).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - BpsimPackage.SCENARIO_PARAMETERS__START, null, msgs);
  			if (newStart != null)
  				msgs = ((InternalEObject)newStart).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - BpsimPackage.SCENARIO_PARAMETERS__START, null, msgs);
  			msgs = basicSetStart(newStart, msgs);
  			if (msgs != null) msgs.dispatch();
  		}
  		else if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, BpsimPackage.SCENARIO_PARAMETERS__START, newStart, newStart));
  	}