code: def test_multiband_hist_title(image_array_2bands):
      """Test that custom titles work for multiband hists."""
      custom_titles = ["Title 1", "Title 2"]
      f, ax = ep.hist(image_array_2bands, title=custom_titles)
      num_plts = image_array_2bands.shape[0]
      assert [
          f.axes[i].get_title() for i in range(num_plts)
      ] == custom_titles
      plt.close(f)
  
imports: import numpy
  import pytest
  import matplotlib.pyplot
  import earthpy.plot
label_desc: Use image node_id 6 for calling a global function with example usage: test_multiband_hist_title(image_array_2bands) without return types