code: def optimize(
      self, origCoords, endPts, tolerance=0.5, isComposite=False
  ):
      from fontTools.varLib.iup import iup_delta_optimize
  
      if None in self.coordinates:
          return  # already optimized
  
      deltaOpt = iup_delta_optimize(
          self.coordinates, origCoords, endPts, tolerance=tolerance
      )
      if None in deltaOpt:
          if isComposite and all(d is None for d in deltaOpt):
              # Fix for macOS composites
              # https://github.com/fonttools/fonttools/issues/1381
              deltaOpt = [(0, 0)] + [None] * (len(deltaOpt) - 1)
          # Use "optimized" version only if smaller...
          varOpt = TupleVariation(self.axes, deltaOpt)
  
          # Shouldn't matter that this is different from fvar...?
          axisTags = sorted(self.axes.keys())
          tupleData, auxData = self.compile(axisTags)
          unoptimizedLength = len(tupleData) + len(auxData)
          tupleData, auxData = varOpt.compile(axisTags)
          optimizedLength = len(tupleData) + len(auxData)
  
          if optimizedLength < unoptimizedLength:
              self.coordinates = varOpt.coordinates
  
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 25 for calling the TupleVariation obj's underlying member method code with example usage: obj.optimize(origCoords, endPts, tolerance, isComposite) without return types