code: def create_channel_mix_layer(in_feat, out_feat):
      return SameLensMaskedLinear(in_feat, out_feat)
  
imports: import math
  import torch
  from torch import nn
  from nemo.collections.tts.modules.submodules import ConvNorm
  from nemo.collections.tts.modules.transformer import PositionalEmbedding
label_desc: Use image node_id 2 for calling a global function with example usage: create_channel_mix_layer(in_feat, out_feat) and returns: SameLensMaskedLinear