while ((node = super.next()) != NULL && _type[node] != _nodeType) { } return returnNode(node);
while ((node = super.next()) != NULL && _type[node] != _nodeType) _position--; return(node);
	public int next() {	    int node;	    while ((node = super.next()) != NULL && _type[node] != _nodeType) {	    }	    return returnNode(node);	}