code: def getV(self, lamsqrttp1):
      from math import sqrt
  
      vlow = self.sumlowv / (
          (self.t + 1) - sqrt(self.t + 1) * lamsqrttp1
      )
      vmid = self.summidv / (self.t + 1)
  
      return (1 / 2) * (lamsqrttp1**2) * (
          vlow + vmid
      ) + self.__histovariance(
          hist=self.sumvhisto, lamsqrttp1=lamsqrttp1
      )
  
label_desc: Use image node_id 6 for calling the GTilde obj's underlying member method code with example usage: obj.getV(lamsqrttp1) and returns: unknown