code: def test_active_dims_disjoint_ok():
      k1 = Matern52(2, variance, lengthscale[0], active_dims=[0, 1])
      k2 = Matern32(1, variance, lengthscale[0], active_dims=[2])
      Sum(k1, k2)
  
file_path: pyro/tests/contrib/gp/test_kernels.py
imports: from collections import namedtuple
  import pytest
  import torch
  from pyro.contrib.gp.kernels import RBF, Brownian, Constant, Coregionalize, Cosine, Exponent, Exponential, Linear, Matern32, Matern52, Periodic, Polynomial, Product, RationalQuadratic, Sum, VerticalScaling, Warping, WhiteNoise
  from tests.common import assert_equal
label_desc: Use image node_id 4 for calling a global function with example usage: test_active_dims_disjoint_ok() without return types