code: def _addQuadraticExact(self, c0, c1, c2):
      self.value += calcQuadraticArcLengthC(c0, c1, c2)
  
file_path: catboost/contrib/python/fonttools/fontTools/pens/perimeterPen.py
imports: from fontTools.pens.basePen import BasePen
  from fontTools.misc.bezierTools import approximateQuadraticArcLengthC, calcQuadraticArcLengthC, approximateCubicArcLengthC, calcCubicArcLengthC
  import math
label_desc: Use image node_id 5 for calling the PerimeterPen obj's underlying member method code with example usage: obj._addQuadraticExact(c0, c1, c2) without return types