code: def sq_dist_func(x1, x2):
      dist_module = gpytorch.kernels.kernel.Distance()
      return dist_module._sq_dist(x1, x2)
  
imports: import unittest
  import torch
  import gpytorch
label_desc: Use image node_id 1 for calling a global function with example usage: sq_dist_func(x1, x2) and returns: dist_module