code: def simpletag(self, _TAG_, *args, **kwargs):
      attrdata = self.stringifyattrs(*args, **kwargs)
      data = "<%s%s/>" % (_TAG_, attrdata)
      self._writeraw(data)
  
imports: from fontTools.misc.textTools import byteord, strjoin, tobytes, tostr
  import sys
  import os
  import string
label_desc: Use image node_id 12 for calling the XMLWriter obj's underlying member method code with example usage: obj.simpletag(_TAG_) without return types