Chat::getAvatar

public function getAvatar(int $size = 200, bool $addBlankPicture = false): string
{
	$url = $addBlankPicture? '/bitrix/js/im/images/blank.gif': '';

	if ((int)$this->getAvatarId() > 0 && $size > 0)
	{
		$arFileTmp = \CFile::ResizeImageGet(
			$this->getAvatarId(),
			['width' => $size, 'height' => $size],
			BX_RESIZE_IMAGE_EXACT,
			false,
			false,
			true
		);
		if (!empty($arFileTmp['src']))
		{
			$url = $arFileTmp['src'];
		}
	}
	return $url;
}