code: def forward(self, x):
      return x[:, :, : -self.chomp_size].contiguous()
  
imports: import pickle
  import numpy
  import torch
  import torch.nn
  import torch.optim
  from torch.autograd import Variable
  from torch.nn.utils import weight_norm
  from bigdl.chronos.model.tcmf.data_loader import TCMFDataLoader
  from bigdl.chronos.model.tcmf.time import TimeCovariates
  import logging
label_desc: Use image node_id 2 for calling the Chomp1d obj's underlying member method code with example usage: obj.forward(x) and returns: x