code: def isClosed(self):
      return self._closed
  
imports: import math
  import sys
  from PyQt5.QtCore import QPointF
  from PyQt5.QtGui import QColor, QPen, QPainterPath, QFont
  from libs.utils import distance
label_desc: Use image node_id 9 for calling the Shape obj's underlying member method code with example usage: obj.isClosed() and returns: self