code: def test_style_opts_simple_explicit(self):
      line = "Layout style(string='foo')"
      expected = {"Layout": {"style": Options(string="foo")}}
      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 2 for calling the OptsSpecStyleOptionsTests obj's underlying member method code with example usage: obj.test_style_opts_simple_explicit() without return types