code: def __call__(self, x: Tensor):
      x = x.float()
      return (
          x * (x.pow(2).mean(-1, keepdim=True) + self.eps).rsqrt()
      ) * self.weight
  
imports: from typing import Tuple, Union, Optional, Dict
  from tinygrad import Tensor, Variable, TinyJit, dtypes, nn, Device
  from tinygrad.helpers import getenv
label_desc: Use image node_id 2 for calling the RMSNorm obj's underlying member method code with example usage: obj.__call__(x) and returns: unknown