code: def test_get_contentType():
      """Test getting type of a histogram"""
      df, hist1, hist2, hist3 = get_test_histograms1()
  
      assert get_contentType(hist1) == "Categorize"
      assert get_contentType(hist2) == "Bin"
      assert get_contentType(hist3) == "SparselyBin"
  
file_path: popmon/tests/popmon/analysis/test_hist_numpy.py
imports: import histogrammar
  import numpy
  import pandas
  import pytest
  from popmon.analysis.hist_numpy import assert_similar_hists, check_similar_hists, get_2dgrid, get_consistent_numpy_1dhists, get_consistent_numpy_2dgrids, get_consistent_numpy_entries, get_contentType, prepare_2dgrid, set_2dgrid
label_desc: Use image node_id 6 for calling a global function with example usage: test_get_contentType() without return types