code: def from_xml(self,xmlnode):
          
          if xmlnode.type!="element":
              raise ValueError("XML node is not a jabber:x:delay element (not an element)")
          ns=get_node_ns_uri(xmlnode)
          if ns and ns!=DELAY_NS or xmlnode.name!="x":
              raise ValueError("XML node is not a jabber:x:delay element")
          stamp=xmlnode.prop("stamp")
          if stamp.endswith("Z"):
              stamp=stamp[:-1]
          if "-" in stamp:
              stamp=stamp.split("-",1)[0]
          try:
              tm = time.strptime(stamp, "%Y%m%dT%H:%M:%S")
          except ValueError:
              raise BadRequestProtocolError("Bad timestamp")
          tm=tm[0:8]+(0,)
          self.timestamp=datetime.datetime.fromtimestamp(time.mktime(tm))
          delay_from=from_utf8(xmlnode.prop("from"))
          if delay_from:
              try:
                  self.delay_from = JID(delay_from)
              except JIDError:
                  raise JIDMalformedProtocolError("Bad JID in the jabber:x:delay 'from' attribute")
          else:
              self.delay_from = None
          self.reason = from_utf8(xmlnode.getContent())
docs: Initialize Delay object from an XML node.
  
          :Parameters:
              - `xmlnode`: the jabber:x:delay XML element.
          :Types:
              - `xmlnode`: `libxml2.xmlNode`