def instrument(operation)
      @instrumenter.instrument(InstrumentationName) do |payload|
        payload[:feature_name] = name
        payload[:operation] = operation
        payload[:result] = yield(payload) if block_given?
      end
    end
def instrument(operation)
      @instrumenter.instrument(InstrumentationName) do |payload|
        payload[:feature_name] = name
        payload[:operation] = operation
        payload[:result] = yield(payload) if block_given?
      end
    end
Private: Instrument a feature operation.