code: def test_can_instantiate():
      s = InvertedEncoding1D()
      assert s, "Invalid InvertedEncoding1D instance"
      s2 = InvertedEncoding2D(
          stim_xlim=[0, 1], stim_ylim=[0, 1], stimulus_resolution=[1, 1]
      )
      assert s2, "Invalid InvertedEncoding2D instance"
  
imports: import pytest
  import numpy
  import logging
  from brainiak.reconstruct.iem import InvertedEncoding1D, InvertedEncoding2D
  from brainiak.utils.fmrisim import generate_1d_gaussian_rfs, generate_1d_rf_responses
  from scipy.stats import circmean
label_desc: Use image node_id 1 for calling a global function with example usage: test_can_instantiate() without return types