code: def fromXML(self, name, attrs, content, ttFont):
      self.coverage = safeEval(attrs["coverage"])
      subtableFormat = safeEval(attrs["format"])
      if self.apple:
          if "tupleIndex" in attrs:
              self.tupleIndex = safeEval(attrs["tupleIndex"])
          else:
              # previous fontTools versions didn't export tupleIndex
              log.warning(
                  "Apple kern subtable is missing 'tupleIndex' attribute"
              )
              self.tupleIndex = None
      else:
          self.tupleIndex = None
      assert subtableFormat == self.format, "unsupported format"
      if not hasattr(self, "kernTable"):
          self.kernTable = {}
      for element in content:
          if not isinstance(element, tuple):
              continue
          name, attrs, content = element
          self.kernTable[(attrs["l"], attrs["r"])] = safeEval(
              attrs["v"]
          )
  
imports: from fontTools.ttLib import getSearchRange
  from fontTools.misc.textTools import safeEval, readHex
  from fontTools.misc.fixedTools import fixedToFloat, floatToFixed
  from .None import DefaultTable
  import struct
  import sys
  import array
  import logging
label_desc: Use image node_id 5 for calling the KernTable_format_0 obj's underlying member method code with example usage: obj.fromXML(name, attrs, content, ttFont) without return types