code: def toXML(self, writer, ttFont):
      formatstring, names, fixes = sstruct.getformat(postFormat)
      for name in names:
          value = getattr(self, name)
          writer.simpletag(name, value=value)
          writer.newline()
      if hasattr(self, "mapping"):
          writer.begintag("psNames")
          writer.newline()
          writer.comment(
              "This file uses unique glyph names based on the information\n"
              "found in the 'post' table. Since these names might not be unique,\n"
              "we have to invent artificial names in case of clashes. In order to\n"
              "be able to retain the original information, we need a name to\n"
              "ps name mapping for those cases where they differ. That's what\n"
              "you see below.\n"
          )
          writer.newline()
          items = sorted(self.mapping.items())
          for name, psName in items:
              writer.simpletag("psName", name=name, psName=psName)
              writer.newline()
          writer.endtag("psNames")
          writer.newline()
      if hasattr(self, "extraNames"):
          writer.begintag("extraNames")
          writer.newline()
          writer.comment(
              "following are the name that are not taken from the standard Mac glyph order"
          )
          writer.newline()
          for name in self.extraNames:
              writer.simpletag("psName", name=name)
              writer.newline()
          writer.endtag("extraNames")
          writer.newline()
      if hasattr(self, "data"):
          writer.begintag("hexdata")
          writer.newline()
          writer.dumphex(self.data)
          writer.endtag("hexdata")
          writer.newline()
  
imports: from fontTools import ttLib
  from fontTools.ttLib.standardGlyphOrder import standardGlyphOrder
  from fontTools.misc import sstruct
  from fontTools.misc.textTools import bytechr, byteord, tobytes, tostr, safeEval, readHex
  from .None import DefaultTable
  import sys
  import struct
  import array
  import logging
label_desc: Use image node_id 11 for calling the table__p_o_s_t obj's underlying member method code with example usage: obj.toXML(writer, ttFont) without return types