def show(self, app_path, browser=None, new='tab'):
        if not app_path.startswith("/"):
            raise ValueError("app_path must start with a /")
        from bokeh.util.browser import view
        url = "http://localhost:%d%s%s" % (self.port, self.prefix, app_path)
        view(url, browser=browser, new=new)
Test annotation class.
dataset/ETHPy150Open bokeh/bokeh/bokeh/server/server.py/Server.show--crossover with--dataset/ETHPy150Open mne-tools/mne-python/mne/tests/test_annotations.py/test_annotations