code: def test_image_ellipsis_slice_value_missing(self):
      data = np.random.rand(10, 10)
      try:
          hv.Image(data)[..., "Non-existent"]
      except Exception as e:
          if (
              str(e)
              != "'Non-existent' is not an available value dimension"
          ):
              raise AssertionError("Unexpected exception.")
  
imports: import numpy
  import holoviews
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 4 for calling the TestEllipsisRaster obj's underlying member method code with example usage: obj.test_image_ellipsis_slice_value_missing() without return types