class_docstr: The .opts method makes use of most of the functionality in
  StoreOptions.
class_docstr_tok: ["The",".opts","method","makes","use","of","most","of","the","functionality","in","StoreOptions","."]
code: def setUp(self):
      Store.current_backend = "matplotlib"
  
imports: import numpy
  from holoviews import Curve, HoloMap, Image, Overlay
  from holoviews.core.options import Store, StoreOptions
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.plotting import mpl
label_desc: Use image node_id 1 for calling the TestStoreOptsMethod obj's underlying member method code with example usage: obj.setUp() without return types