public function from(ID $node_id, string $class=""): \ArrayIterator
    {
        return $this->retrieveDirected(Direction::in(), $node_id, $class);
    }
public function from(ID $node_id, string $class=""): \ArrayIterator
    {
        return $this->retrieveDirected(Direction::in(), $node_id, $class);
    }
public function from ( ID $ node_id , string $ class = "" ) : \ ArrayIterator { return $ this -> retrieveDirected ( Direction :: in ( ) , $ node_id , $ class ) ; }
Retrieves a list of edges to the list's owner node from the given
source node.

@param ID $node_id   Source (tail) node.
@param string        $class The type of edge (defined in edge class) to return

@return \ArrayIterator An array of edge objects from. Returns an empty array if there is no such connections.
Retrieves a list of edges to the list s owner node from the given source node .