code: def forward(self, x):
      if self.stride == 2:
          h = F.pad(x, (0, 2, 0, 2), "constant", 0)
          x = self.max_pool(x)
      else:
          h = x
  
      if self.channel_pad > 0:
          x = F.pad(x, (0, 0, 0, 0, 0, self.channel_pad), "constant", 0)
  
      return self.act(self.convs(h) + x)
  
imports: import numpy
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the BlazeBlock obj's underlying member method code with example usage: obj.forward(x) and returns: self