code: def forward(self, x):
      out = self.layers(x)
      if self.id_skip:
          out = out + x
      return out
  
imports: import torch.nn
  from .layers import Flatten
  from .layers import SEModule
  from .layers import Swish
  from .mdconv import MDConv
  from .utils import MixnetDecoder
  from .utils import round_filters
label_desc: Use image node_id 2 for calling the MixBlock obj's underlying member method code with example usage: obj.forward(x) and returns: out