public function getImportedExternalPageLinks($pageNumber)
	{
		$links = [];

		$reader = $this->getPdfReader($this->currentReaderId);
		$parser = $reader->getParser();

		$page = $reader->getPage($pageNumber);
		$page->getPageDictionary();

		$annotations = $page->getAttribute('Annots');
		if ($annotations instanceof PdfIndirectObjectReference) {
			$annotations = PdfType::resolve($parser->getIndirectObject($annotations->value), $parser);
		}

		if ($annotations instanceof PdfArray) {

			$getAttribute = function ($array, $key) {
				if (isset($array[$key]->value)) {
					return $array[$key]->value;
				}

				return '';
			};

			foreach ($annotations->value as $annotation) {
				$annotation = PdfType::resolve($annotation, $parser)->value;

				/* Skip over any annotations that aren't links */
				$type = $getAttribute($annotation, 'Type');
				$subtype = $getAttribute($annotation, 'Subtype');
				if ($type !== 'Annot' || $subtype !== 'Link' || !isset($annotation['A'])) {
					continue;
				}

				/* Calculate the link positioning */
				$position = $getAttribute($annotation, 'Rect');

				if (count($position) !== 4) {
					continue;
				}

				$x1 = $getAttribute($position, 0) / Mpdf::SCALE;
				$y1 = $getAttribute($position, 1) / Mpdf::SCALE;
				$x2 = $getAttribute($position, 2) / Mpdf::SCALE;
				$y2 = $getAttribute($position, 3) / Mpdf::SCALE;
				$width = $x2 - $x1;
				$height = $y2 - $y1;

				$link = $annotation['A'] instanceof PdfIndirectObjectReference ? PdfType::resolve($annotation['A'], $parser)->value : $getAttribute($annotation, 'A');

				if (isset($link['URI'])) {
					$links[] = [
						'x' => $x1,
						'y' => $y1,
						'width' => $width,
						'height' => $height,
						'url' => $getAttribute($link, 'URI')
					];
				}
			}
		}

		return $links;
	}