docstr: Writes text in a CDATA section.
docstr_tok: ["Writes","text","in","a","CDATA","section","."]
code: def writecdata(self, string):
      """Writes text in a CDATA section."""
      self._writeraw("<![CDATA[" + string + "]]>")
  
imports: from fontTools.misc.textTools import byteord, strjoin, tobytes, tostr
  import sys
  import os
  import string
label_desc: Use image node_id 6 for calling the XMLWriter obj's underlying member method code with example usage: obj.writecdata(string) without return types