code: def getIdentifierForPoint(self, point):
          
          point = normalizers.normalizePoint(point)
          return self._getIdentifierforPoint(point)
docs: Create a unique identifier for and assign it to ``point``.
          If the point already has an identifier, the existing
          identifier will be returned.
  
              >>> contour.getIdentifierForPoint(point)
              'ILHGJlygfds'
  
          ``point`` must be a :class:`BasePoint`. The returned value
          will be a :ref:`type-identifier`.