The ID of the folder where the file should be stored.
Any folders defined in the path will be created inside the parent folder.
If you don’t provide a parent_id, the file will be stored in the root folder.
To get the parent_id, open the folder in the SafetyCulture web app and copy the last part of the URL.
For example, in this link https://app.safetyculture.com/documents/9dd76834-65ef-41d3-815c-964df32450e4,
the parent ID is 9dd76834-65ef-41d3-815c-964df32450e4.