class_docstr: L2 regularized loss
class_docstr_tok: ["L2","regularized","loss"]
code: def __add_l2(var):
      return var.pow(2).sum()
  
imports: from enum import Enum
label_desc: Use image node_id 4 for calling the L2Regularizer obj's underlying member method code with example usage: obj.__add_l2(var) and returns: var