class_docstr: dummy k400 loss for MViT.
class_docstr_tok: ["dummy","k400","loss","for","MViT","."]
code: def __call__(self, logits, targets, **kwargs):
      return self.loss(
          logits,
          torch.randint(
              0, 400, (logits.size(0),), device=logits.device
          ),
      )
  
imports: import torch
  from torch import nn
label_desc: Use image node_id 2 for calling the DummyK400Loss obj's underlying member method code with example usage: obj.__call__(logits, targets) and returns: self