def store(label, stats = {}, date = nil, opts = {}, meta = {})
      Event.new(self.name, label, date, stats, options.merge(opts), meta).save
    end
def store(label, stats = {}, date = nil, opts = {}, meta = {})
      Event.new(self.name, label, date, stats, options.merge(opts), meta).save
    end
statistics store/fetch methods