code: def test_contour_series_show_clabels():
      # verify that a contour series has the abiliy to set the visibility of
      # labels to contour lines
  
      x, y = symbols("x, y")
      s = ContourSeries(cos(x * y), (x, -2, 2), (y, -2, 2))
      assert s.show_clabels
  
      s = ContourSeries(
          cos(x * y), (x, -2, 2), (y, -2, 2), clabels=True
      )
      assert s.show_clabels
  
      s = ContourSeries(
          cos(x * y), (x, -2, 2), (y, -2, 2), clabels=False
      )
      assert not s.show_clabels
  
imports: from sympy import latex, exp, symbols, I, pi, sin, cos, tan, log, sqrt, re, im, arg, frac, Sum, S, Abs, lambdify, Function, dsolve, Eq, floor, Tuple
  from sympy.external import import_module
  from sympy.plotting.series import LineOver1DRangeSeries, Parametric2DLineSeries, Parametric3DLineSeries, SurfaceOver2DRangeSeries, ContourSeries, ParametricSurfaceSeries, ImplicitSeries, _set_discretization_points, List2DSeries
  from sympy.testing.pytest import raises, warns, XFAIL, skip, ignore_warnings
label_desc: Use image node_id 37 for calling a global function with example usage: test_contour_series_show_clabels() without return types