old_contents: class TrackingSettings(object):
      """Settings to track how recipients interact with your email."""
      def __init__(self):
          """Create an empty TrackingSettings."""
          self._click_tracking = None
          self._open_tracking = None
          self._subscription_tracking = None
          self._ganalytics = None
  
      @property
      def click_tracking(self):
          """Allows you to track whether a recipient clicked a link in your email.
  
          :rtype: ClickTracking
          """
          return self._click_tracking
  
      @click_tracking.setter
      def click_tracking(self, value):
          self._click_tracking = value
  
      @property
      def open_tracking(self):
          """Allows you to track whether a recipient opened your email.
  
          :rtype: OpenTracking
          """
          return self._open_tracking
  
      @open_tracking.setter
      def open_tracking(self, value):
          self._open_tracking = value
  
      @property
      def subscription_tracking(self):
          """Settings for the subscription management link.
  
          :rtype: SubscriptionTracking
          """
          return self._subscription_tracking
  
      @subscription_tracking.setter
      def subscription_tracking(self, value):
          self._subscription_tracking = value
  
      @property
      def ganalytics(self):
          """Settings for Google Analytics.
  
          :rtype: Ganalytics
          """
          return self._ganalytics
  
      @ganalytics.setter
      def ganalytics(self, value):
          self._ganalytics = value
  
      def get(self):
          """
          Get a JSON-ready representation of this TrackingSettings.
  
          :returns: This TrackingSettings, ready for use in a request body.
          :rtype: dict
          """
          tracking_settings = {}
          if self.click_tracking is not None:
              tracking_settings["click_tracking"] = self.click_tracking.get()
          if self.open_tracking is not None:
              tracking_settings["open_tracking"] = self.open_tracking.get()
          if self.subscription_tracking is not None:
              tracking_settings[
                  "subscription_tracking"] = self.subscription_tracking.get()
          if self.ganalytics is not None:
              tracking_settings["ganalytics"] = self.ganalytics.get()
          return
  
new_contents: class TrackingSettings(object):
      """Settings to track how recipients interact with your email."""
      def __init__(self):
          """Create an empty TrackingSettings."""
          self._click_tracking = None
          self._open_tracking = None
          self._subscription_tracking = None
          self._ganalytics = None
  
      @property
      def click_tracking(self):
          """Allows you to track whether a recipient clicked a link in your email.
  
          :rtype: ClickTracking
          """
          return self._click_tracking
  
      @click_tracking.setter
      def click_tracking(self, value):
          self._click_tracking = value
  
      @property
      def open_tracking(self):
          """Allows you to track whether a recipient opened your email.
  
          :rtype: OpenTracking
          """
          return self._open_tracking
  
      @open_tracking.setter
      def open_tracking(self, value):
          self._open_tracking = value
  
      @property
      def subscription_tracking(self):
          """Settings for the subscription management link.
  
          :rtype: SubscriptionTracking
          """
          return self._subscription_tracking
  
      @subscription_tracking.setter
      def subscription_tracking(self, value):
          self._subscription_tracking = value
  
      @property
      def ganalytics(self):
          """Settings for Google Analytics.
  
          :rtype: Ganalytics
          """
          return self._ganalytics
  
      @ganalytics.setter
      def ganalytics(self, value):
          self._ganalytics = value
  
      def get(self):
          """
          Get a JSON-ready representation of this TrackingSettings.
  
          :returns: This TrackingSettings, ready for use in a request body.
          :rtype: dict
          """
          tracking_settings = {}
          if self.click_tracking is not None:
              tracking_settings["click_tracking"] = self.click_tracking.get()
          if self.open_tracking is not None:
              tracking_settings["open_tracking"] = self.open_tracking.get()
          if self.subscription_tracking is not None:
              tracking_settings[
                  "subscription_tracking"] = self.subscription_tracking.get()
          if self.ganalytics is not None:
              tracking_settings["ganalytics"] = self.ganalytics.get()
          return tracking_settings
  
subject: Fix more broken merge stuff