/**
* Closes the document by writing the file trailer.
*
* While the PDF writer will remove all references to the passed in file object in itself to avoid further writing
* and to allow the file pointer to be closed, the callee may still have a reference to it. If that is the case,
* make sure to unset it if you don't need it.
*
* Any further attempts to append data to the PDF writer will result in an exception.
*/
public function closeDocument()
{
$xrefOffset = $this->writeXrefTable();
$this->writeTrailer();
$this->writeFooter($xrefOffset);
$this->objectWriter->close();
}
