code: def parse_drawing(document, container, elem):
      
  
      _blip = elem.xpath('.//a:blip', namespaces=NAMESPACES)
  
      if len(_blip) > 0:
          blip = _blip[0]
          _rid = blip.attrib[_name('{{{r}}}embed')]
  
          img = doc.Image(_rid)
          container.elements.append(img)
docs: Parse drawing element.
  
      We don't do much with drawing element. We can find embeded image but we don't do more than that.