Credit

17class Credit18{19    /**20     * Credited role21     *22     * @var ?string23     * @see get_role()24     */25    public $role;26 27    /**28     * Organizational scheme29     *30     * @var ?string31     * @see get_scheme()32     */33    public $scheme;34 35    /**36     * Credited name37     *38     * @var ?string39     * @see get_name()40     */41    public $name;42 43    /**44     * Constructor, used to input the data45     *46     * For documentation on all the parameters, see the corresponding47     * properties and their accessors48     */49    public function __construct(50        ?string $role = null,51        ?string $scheme = null,52        ?string $name = null53    ) {54        $this->role = $role;55        $this->scheme = $scheme;56        $this->name = $name;57    }58 59    /**60     * String-ified version61     *62     * @return string63     */64    public function __toString()65    {66        // There is no $this->data here67        return md5(serialize($this));68    }69 70    /**71     * Get the role of the person receiving credit72     *73     * @return string|null74     */75    public function get_role()76    {77        if ($this->role !== null) {78            return $this->role;79        }80 81        return null;82    }83 84    /**85     * Get the organizational scheme86     *87     * @return string|null88     */89    public function get_scheme()90    {91        if ($this->scheme !== null) {92            return $this->scheme;93        }94 95        return null;96    }