def __init__(self, label, func=None, icon=None, link=None, queryset=None, statistic_slug=None):
    self.label = label
    self.icon = icon
    self.link = link
    self.queryset = queryset
    self.func = func
    self.statistic_slug = statistic_slug
    self.__class__._registry.append(self)
def __init__(self, label, func=None, icon=None, link=None, queryset=None, statistic_slug=None):
    self.label = label
    self.icon = icon
    self.link = link
    self.queryset = queryset
    self.func = func
    self.statistic_slug = statistic_slug
    self.__class__._registry.append(self)