code: def compileCoord(self, axisTags):
      result = []
      axes = self.axes
      for axis in axisTags:
          triple = axes.get(axis)
          if triple is None:
              result.append(b"\0\0")
          else:
              result.append(struct.pack(">h", fl2fi(triple[1], 14)))
      return b"".join(result)
  
imports: from fontTools.misc.fixedTools import fixedToFloat, floatToFixed, floatToFixedToStr, strToFixedToFloat, otRound
  from fontTools.misc.textTools import safeEval
  import array
  from collections import Counter, defaultdict
  import io
  import logging
  import struct
  import sys
label_desc: Use image node_id 9 for calling the TupleVariation obj's underlying member method code with example usage: obj.compileCoord(axisTags) and returns: bytes