public function getVerticesEdgeTo()
    {
        $ret = array();
        foreach ($this->getEdgesOut() as $edge) {
            $ret []= $edge->getVertexToFrom($this);
        }

        return new Vertices($ret);
    }
public function getVerticesEdgeTo()
    {
        $ret = array();
        foreach ($this->getEdgesOut() as $edge) {
            $ret []= $edge->getVertexToFrom($this);
        }

        return new Vertices($ret);
    }
public function getVerticesEdgeTo ( ) { $ ret = array ( ) ; foreach ( $ this -> getEdgesOut ( ) as $ edge ) { $ ret [ ] = $ edge -> getVertexToFrom ( $ this ) ; } return new Vertices ( $ ret ) ; }
get set of all Vertices this vertex has an edge to

If there are multiple parallel edges to the same Vertex, it will be
returned several times in the resulting Set of Vertices. If you only
want unique Vertex instances, use `getVerticesDistinct()`.

@return Vertices
@uses Vertex::getEdgesOut()
@uses Edge::getVerticesToFrom()
get set of all Vertices this vertex has an edge to