class_docstr: Abstract base class for generator loss functions.
code: def __call__(self, logits: Tensor, target: Tensor) -> Tensor:
      raise NotImplementedError
  
imports: import torch.nn
  from torch import Tensor
label_desc: Use image node_id 1 for calling the GeneratorLoss obj's underlying member method code with example usage: obj.__call__(logits, target) without return types