code: def add_regularization(self):
      pass
  
file_path: neural_prophet/neuralprophet/components/trend/linear.py
imports: import torch
  import torch.nn
  from neuralprophet.components.trend import Trend
  from neuralprophet.utils_torch import init_parameter
label_desc: Use image node_id 3 for calling the LinearTrend obj's underlying member method code with example usage: obj.add_regularization() without return types