docs: public void setLiteral(Keyword newLiteral) {
  		if (newLiteral != literal) {
  			NotificationChain msgs = null;
  			if (literal != null)
  				msgs = ((InternalEObject)literal).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - XtextPackage.ENUM_LITERAL_DECLARATION__LITERAL, null, msgs);
  			if (newLiteral != null)
  				msgs = ((InternalEObject)newLiteral).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - XtextPackage.ENUM_LITERAL_DECLARATION__LITERAL, null, msgs);
  			msgs = basicSetLiteral(newLiteral, msgs);
  			if (msgs != null) msgs.dispatch();
  		}
  		else if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, XtextPackage.ENUM_LITERAL_DECLARATION__LITERAL, newLiteral, newLiteral));
  	}