src/Potter/Utils/Metabox.php
public function addFields(array $fields)
    {
        foreach ($fields as $key => $field):
            $this->addField($key, $field);
        endforeach;

        return $this;
    }
public function addFields(array $fields)
    {
        foreach ($fields as $key => $field):
            $this->addField($key, $field);
        endforeach;

        return $this;
    }
@param array $fields

@return $this