class_docstr: Test the OptsSpec parser works correctly for plot options.
code: def test_plot_opts_with_space_explicit(self):
      line = "Layout plot[fig_inches=(3, 3) title='foo bar']"
      expected = {
          "Layout": {
              "plot": Options(title="foo bar", fig_inches=(3, 3))
          }
      }
      self.assertEqual(OptsSpec.parse(line), expected)
  
imports: from unittest import SkipTest
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.core.options import Cycle, Options
label_desc: Use image node_id 4 for calling the OptsSpecPlotOptionsTests obj's underlying member method code with example usage: obj.test_plot_opts_with_space_explicit() without return types