code: def toXML(self, writer, ttFont):
      for i, doc in enumerate(self.docList):
          if isinstance(doc, (list, tuple)):
              doc = SVGDocument(*doc)
              self.docList[i] = doc
          attrs = {
              "startGlyphID": doc.startGlyphID,
              "endGlyphID": doc.endGlyphID,
          }
          if doc.compressed:
              attrs["compressed"] = 1
          writer.begintag("svgDoc", **attrs)
          writer.newline()
          writer.writecdata(doc.data)
          writer.newline()
          writer.endtag("svgDoc")
          writer.newline()
  
imports: from fontTools.misc.textTools import bytesjoin, safeEval, strjoin, tobytes, tostr
  from fontTools.misc import sstruct
  from .None import DefaultTable
  from collections.abc import Sequence
  from dataclasses import dataclass, astuple
  from io import BytesIO
  import struct
  import logging
label_desc: Use image node_id 3 for calling the table_S_V_G_ obj's underlying member method code with example usage: obj.toXML(writer, ttFont) without return types