src/Entities/PostType.php
public function addMetaBox($id, $args)
    {
        $box = new MetaBox($id, $this->name, $args);

        return $this;
    }
public function addMetaBox($id, $args)
    {
        $box = new MetaBox($id, $this->name, $args);

        return $this;
    }
public function addMetaBox ( $ id , $ args ) { $ box = new MetaBox ( $ id , $ this -> name , $ args ) ; return $ this ; }
Add Meta Box to the Post Type.

@param string $id
@param array  $args
Add Meta Box to the Post Type .