docs: public void setMetamodel(AbstractMetamodelDeclaration newMetamodel) {
  		AbstractMetamodelDeclaration oldMetamodel = metamodel;
  		metamodel = newMetamodel;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, XtextPackage.TYPE_REF__METAMODEL, oldMetamodel, metamodel));
  	}