code: def test_hvplot_default_cat_cmap_opts(self, df, backend):
      import colorcet as cc
  
      plot = df.hvplot.scatter("x", "y", c="category")
      opts = Store.lookup_options(backend, plot, "style")
      assert opts.kwargs["cmap"] == cc.palette["glasbey_category10"]
  
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 24 for calling the TestOptions obj's underlying member method code with example usage: obj.test_hvplot_default_cat_cmap_opts(df, backend) without return types