implements::setCharsetCode

public function setCharsetCode(int $charsetCode): self
{
	if (
		$charsetCode !== static::CHARSET_WIN1251
		&& $charsetCode !== static::CHARSET_UTF8
		&& $charsetCode !== static::CHARSET_KOI8R
	)
	{
		throw new ArgumentOutOfRangeException('charsetCode', static::CHARSET_WIN1251, static::CHARSET_KOI8R);
	}

	$this->charsetCode = $charsetCode;

	return $this;
}