code: def matmul(x, y):
      return __replicated_secret_sharing_protocol("matmul", x, y)
  
file_path: CrypTen/crypten/mpc/primitives/replicated.py
imports: import crypten.communicator
  import torch
label_desc: Use image node_id 4 for calling a global function with example usage: matmul(x, y) and returns: __replicated_secret_sharing_protocol