code: def __init__(self, model):
      self.name = "dummy-loss"
      self.output = model.output
  
file_path: keras-vis/tests/vis/test_optimizer.py
imports: import pytest
  import keras.backend
  from keras.layers import Dense
  from keras.models import Sequential
  from vis.optimizer import Optimizer
  from vis.losses import Loss
label_desc: Use image node_id 1 to create a new _DummyLoss object from inherited base classes: Loss with example: obj = _DummyLoss(model)