Using field masks with update requests to Google APIs
Blog post from Google Cloud
Field masks in Google APIs can significantly optimize update requests by controlling which fields are updated in API calls, functioning similarly to bitmasks. This feature is particularly useful in scenarios involving Google Sheets and Slides APIs, as it allows developers to specify which attributes should be altered, such as making text bold, while leaving other attributes unchanged. The use of field masks requires two components: the request data, which specifies the desired changes, and the field mask itself, which indicates the fields to be updated. This dual approach not only makes the update process more efficient but also enables developers to reset or undo previous settings for a specific range of cells. For more detailed examples and guidelines on using field masks, additional resources and videos are available, including comprehensive documentation within the Google Slides API guide.