@Override
    public boolean applyAction(Model c) {
        if (c.getMapping().isOffline(node)) {
            c.getMapping().addOnlineNode(node);
            return true;
        }
        return false;
    }
@ Override public boolean applyAction ( Model c ) { if ( c . getMapping ( ) . isOffline ( node ) ) { c . getMapping ( ) . addOnlineNode ( node ) ; return true ; } return false ; }
Put the node online on the model.

@param c the model to alter
@return {@code true} iff the node was offline and is now online