def get_count(self, unique_identifier, metric, **kwargs):
        raise NotImplementedError()
Destroys all of the child controls of a specified GUI toolkit
dataset/ETHPy150Open numan/py-analytics/analytics/backends/base.py/BaseAnalyticsBackend.get_count--crossover with--dataset/ETHPy150Open enthought/traitsui/traitsui/qt4/toolkit.py/GUIToolkit.destroy_children