code: def test_bivariate_opts(self, df, backend):
      plot = df.hvplot.bivariate(
          "x", "y", bandwidth=0.2, cut=1, levels=5, filled=True
      )
      opts = Store.lookup_options(backend, plot, "plot")
      assert opts.kwargs["bandwidth"] == 0.2
      assert opts.kwargs["cut"] == 1
      assert opts.kwargs["levels"] == 5
      assert opts.kwargs["filled"] is True
  
imports: import hvplot
  import holoviews
  import numpy
  import pandas
  import pytest
  import xarray
  from holoviews import Store
  from holoviews.core.options import Options, OptionTree
label_desc: Use image node_id 37 for calling the TestOptions obj's underlying member method code with example usage: obj.test_bivariate_opts(df, backend) without return types