code: def fromXML(self, name, attrs, content, ttFont):
      if name != "trackEntry":
          return
      entry = TrackTableEntry()
      entry.fromXML(name, attrs, content, ttFont)
      self[entry.track] = entry
  
imports: from fontTools.misc import sstruct
  from fontTools.misc.fixedTools import fixedToFloat, floatToFixed, floatToFixedToStr, strToFixedToFloat
  from fontTools.misc.textTools import bytesjoin, safeEval
  from fontTools.ttLib import TTLibError
  from .None import DefaultTable
  import struct
  from collections.abc import MutableMapping
label_desc: Use image node_id 5 for calling the TrackData obj's underlying member method code with example usage: obj.fromXML(name, attrs, content, ttFont) without return types