code: def test_bivariate_dict_constructor(self):
      dist = Bivariate({"x": [0, 1, 2], "y": [0, 1, 2]}, ["x", "y"])
      assert dist.kdims == [Dimension("x"), Dimension("y")]
      assert dist.vdims == [Dimension("Density")]
  
imports: import numpy
  import pandas
  import pytest
  from holoviews.core.dimension import Dimension
  from holoviews.core.options import Compositor, Store
  from holoviews.element import Area, Bivariate, Contours, Curve, Distribution, Image, Points, Polygons
label_desc: Use image node_id 8 for calling the TestStatisticalElement obj's underlying member method code with example usage: obj.test_bivariate_dict_constructor() without return types