code: def forward(self, logits, labels):
      # `logits` and `labels` unused
      raise RuntimeError(
          "A `NoncustomizableLoss` object should not be called."
      )
  
imports: import paddle
  from paddlepanseg.cvlibs import manager
label_desc: Use image node_id 2 for calling the NoncustomizableLoss obj's underlying member method code with example usage: obj.forward(logits, labels) without return types