code: def test_apply_options_explicit_backend_plot(self):
      obj = ExampleElement([]).options(
          plot_opt1="A", backend="backend_2"
      )
      opts = Store.lookup_options("backend_2", obj, "plot")
      assert opts.options == {"plot_opt1": "A"}
  
imports: import gc
  from holoviews.core.element import Element
  from holoviews.core.options import Keywords, Options, OptionTree, Store
  from holoviews.core.spaces import HoloMap
  from ..utils import LoggingComparisonTestCase
label_desc: Use image node_id 14 for calling the TestDimensioned_options obj's underlying member method code with example usage: obj.test_apply_options_explicit_backend_plot() without return types