ReturnDocument public enum ReturnDocument : String, Decodable Indicates which document to return in a find and modify operation. before Indicates to return the document before the update, replacement, or insert occurred. Declaration Swift case before = "Before" after Indicates to return the document after the update, replacement, or insert occurred. Declaration Swift case after = "After" © 2019 Matt Broadstone, Kaitlin Mahar, and Patrick Freed. All rights reserved. (Last updated: 2019-06-04) Generated by jazzy ♪♫ v0.9.6, a Realm project.