src/vs/editor/contrib/find/browser/findController.ts/PreviousSelectionMatchFindAction/constructor
class PreviousSelectionMatchFindAction:	constructor() {
		super({
			id: FIND_IDS.PreviousSelectionMatchFindAction,
			label: nls.localize('previousSelectionMatchFindAction', "Find Previous Selection"),
			alias: 'Find Previous Selection',
			precondition: undefined,
			kbOpts: {
				kbExpr: EditorContextKeys.focus,
				primary: KeyMod.CtrlCmd | KeyMod.Shift | KeyCode.F3,
				weight: KeybindingWeight.EditorContrib
			}
		});
	}