code: def value(self):
      mse = self.sesum / max(1, self.n)
      return math.sqrt(mse) if self.root else mse
  
file_path: pywick/pywick/meters/msemeter.py
imports: import math
  from .None import meter
  import torch
label_desc: Use image node_id 4 for calling the MSEMeter obj's underlying member method code with example usage: obj.value() and returns: unknown