class_docstr: Pen calculating area, center of mass, variance and
  standard-deviation, covariance and correlation, and slant,
  of glyph shapes, using the control polygon only.
  
  Note that if the glyph shape is self-intersecting, the values
  are not correct (but well-defined). Moreover, area will be
  negative if contour directions are clockwise.
class_docstr_tok: ["Pen","calculating","area",",","center","of","mass",",","variance","and","standard-deviation",",","covariance","and","correlation",",","and","slant",",","of","glyph","shapes",",","using","the","control","polygon","only",".","Note","that","if","the","glyph","shape","is","self-intersecting",",","the","values","are","not","correct","(","but","well-defined",")",".","Moreover",",","area","will","be","negative","if","contour","directions","are","clockwise","."]
code: def _closePath(self):
      self._update()
  
imports: from math import sqrt, degrees, atan
  from fontTools.pens.basePen import BasePen, OpenContourError
  from fontTools.pens.momentsPen import MomentsPen
label_desc: Use image node_id 6 for calling the StatisticsControlPen obj's underlying member method code with example usage: obj._closePath() without return types