Adds tags to the stack if this resource is using the serverless app repo

def _get_application_tags(self):
        """Adds tags to the stack if this resource is using the serverless app repo
        """
        application_tags = {}
        if isinstance(self.Location, dict):
            if (self.APPLICATION_ID_KEY in self.Location.keys() and
                    self.Location[self.APPLICATION_ID_KEY] is not None):
                application_tags[self._SAR_APP_KEY] = self.Location[self.APPLICATION_ID_KEY]
            if (self.SEMANTIC_VERSION_KEY in self.Location.keys() and
                    self.Location[self.SEMANTIC_VERSION_KEY] is not None):
                application_tags[self._SAR_SEMVER_KEY] = self.Location[self.SEMANTIC_VERSION_KEY]
        return application_tags