code: def __init__(self, font, location):
      tableTag = "CFF2" if "CFF2" in font else "CFF "
      self.charStrings = list(font[tableTag].cff.values())[
          0
      ].CharStrings
      super().__init__(font, location, self.charStrings)
      self.blender = None
      if location:
          from fontTools.varLib.varStore import VarStoreInstancer
  
          varStore = getattr(self.charStrings, "varStore", None)
          if varStore is not None:
              instancer = VarStoreInstancer(
                  varStore.otVarStore, font["fvar"].axes, location
              )
              self.blender = instancer.interpolateFromDeltas
  
imports: from abc import ABC, abstractmethod
  from collections.abc import Mapping
  from contextlib import contextmanager
  from copy import copy
  from types import SimpleNamespace
  from fontTools.misc.fixedTools import otRound
  from fontTools.misc.loggingTools import deprecateFunction
  from fontTools.misc.transform import Transform
  from fontTools.pens.transformPen import TransformPen, TransformPointPen
  from fontTools.pens.recordingPen import DecomposingRecordingPen, lerpRecordings, replayRecording
label_desc: Use image node_id 1 to create a new _TTGlyphSetCFF object from inherited base classes: _TTGlyphSet with example: obj = _TTGlyphSetCFF(font, location)