class_docstr: A pen that creates a CGPath
  
  Parameters
  - path: an optional CGPath to add to
  - xform: an optional CGAffineTransform to apply to the path
code: def _curveToOne(self, p1, p2, p3):
      (x1, y1), (x2, y2), (x3, y3) = p1, p2, p3
      CGPathAddCurveToPoint(
          self.path, self.xform, x1, y1, x2, y2, x3, y3
      )
  
file_path: catboost/contrib/python/fonttools/fontTools/pens/quartzPen.py
imports: from fontTools.pens.basePen import BasePen
  from Quartz.CoreGraphics import CGPathCreateMutable, CGPathMoveToPoint
  from Quartz.CoreGraphics import CGPathAddLineToPoint, CGPathAddCurveToPoint
  from Quartz.CoreGraphics import CGPathAddQuadCurveToPoint, CGPathCloseSubpath
label_desc: Use image node_id 4 for calling the QuartzPen obj's underlying member method code with example usage: obj._curveToOne(p1, p2, p3) without return types