code: def test_dataarray_4d_line_no_title(self, da, backend):
      plot = da.hvplot.line(dynamic=False)  # Line plot with widgets
      opts = Store.lookup_options(backend, plot.last, "plot")
      assert "title" not in opts.kwargs
  
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 5 for calling the TestXarrayTitle obj's underlying member method code with example usage: obj.test_dataarray_4d_line_no_title(da, backend) without return types