code: def compile(self):
      return sstruct.pack(FVAR_AXIS_FORMAT, self)
  
imports: from fontTools.misc import sstruct
  from fontTools.misc.fixedTools import fixedToFloat, floatToFixed, floatToFixedToStr, strToFixedToFloat
  from fontTools.misc.textTools import Tag, bytesjoin, safeEval
  from fontTools.ttLib import TTLibError
  from .None import DefaultTable
  import struct
label_desc: Use image node_id 2 for calling the Axis obj's underlying member method code with example usage: obj.compile() and returns: sstruct