public function addGraphMetadata(GraphNode $node, GraphMetadataInterface $data)
    {
        $this->nodes[] = [
            'node'   => $node,
            'object' => $data,
        ];

        return $this;
    }
public function addGraphMetadata(GraphNode $node, GraphMetadataInterface $data)
    {
        $this->nodes[] = [
            'node'   => $node,
            'object' => $data,
        ];

        return $this;
    }
public function addGraphMetadata ( GraphNode $ node , GraphMetadataInterface $ data ) { $ this -> nodes [ ] = [ 'node' => $ node , 'object' => $ data , ] ; return $ this ; }
Add OpenGraph metadata

@param GraphNode              $type
@param GraphMetadataInterface $data
@return ClassMetadata
Add OpenGraph metadata