class_docstr: An abstract class representing a regularizer. It must implement
  call, returning a scalar tensor.
class_docstr_tok: ["An","abstract","class","representing","a","regularizer",".","It","must","implement","call",",","returning","a","scalar","tensor","."]
code: def __call__(self, parameter):
      raise NotImplementedError
  
imports: from __future__ import absolute_import
  import torch
  from allennlp.common import Registrable
label_desc: Use image node_id 1 for calling the Regularizer obj's underlying member method code with example usage: obj.__call__(parameter) without return types