docs: public void setFixedCost(Parameter newFixedCost) {
  		if (newFixedCost != fixedCost) {
  			NotificationChain msgs = null;
  			if (fixedCost != null)
  				msgs = ((InternalEObject)fixedCost).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - BpsimPackage.COST_PARAMETERS__FIXED_COST, null, msgs);
  			if (newFixedCost != null)
  				msgs = ((InternalEObject)newFixedCost).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - BpsimPackage.COST_PARAMETERS__FIXED_COST, null, msgs);
  			msgs = basicSetFixedCost(newFixedCost, msgs);
  			if (msgs != null) msgs.dispatch();
  		}
  		else if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, BpsimPackage.COST_PARAMETERS__FIXED_COST, newFixedCost, newFixedCost));
  	}