code: def _getGreenBezierFuncs(celf, func):
      funcstr = str(func)
      if not funcstr in celf._BezierFuncs:
          celf._BezierFuncs[funcstr] = _BezierFuncsLazy(func)
      return celf._BezierFuncs[funcstr]
  
imports: from fontTools.pens.basePen import BasePen
  from functools import partial
  from itertools import count
  import sympy
  import sys
label_desc: Use image node_id 1 for calling the GreenPen obj's underlying member method code with example usage: obj._getGreenBezierFuncs(celf, func) and returns: celf