Xml2Array::convert Unable to fetch office xml document xmlns attributes

[miss55]

xml:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<w:document xmlns:wpc="http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas"
  xmlns:cx="http://schemas.microsoft.com/office/drawing/2014/chartex"
  xmlns:cx1="http://schemas.microsoft.com/office/drawing/2015/9/8/chartex"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  xmlns:o="urn:schemas-microsoft-com:office:office"
  xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
  xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math"
  xmlns:v="urn:schemas-microsoft-com:vml"
  xmlns:wp14="http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing"
  xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"
  xmlns:w10="urn:schemas-microsoft-com:office:word"
  xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"
  xmlns:w14="http://schemas.microsoft.com/office/word/2010/wordml"
  xmlns:w15="http://schemas.microsoft.com/office/word/2012/wordml"
  xmlns:w16se="http://schemas.microsoft.com/office/word/2015/wordml/symex"
  xmlns:wpg="http://schemas.microsoft.com/office/word/2010/wordprocessingGroup"
  xmlns:wpi="http://schemas.microsoft.com/office/word/2010/wordprocessingInk"
  xmlns:wne="http://schemas.microsoft.com/office/word/2006/wordml"
  xmlns:wps="http://schemas.microsoft.com/office/word/2010/wordprocessingShape"
  mc:Ignorable="w14 w15 w16se wp14">
  <w:body>
    
  </w:body>
</w:document>

I can't get attributes like xmlns:
If you parse $this->xml->documentElement with simplexml_import_dom
you can get it through the getDocNamespaces() method

   # test in vendor/jackiedo/xml-array/src/Xml2Array.php:130
   // Convert the XML to an array, starting with the root node
    $rootNode     = $this->xml->documentElement;
    $sxe = simplexml_import_dom($rootNode);
    var_dump($sxe->getDocNamespaces());