chore: Docs, define additional client-side relations

app/models/Revision.ts

@@ -1,14 +1,18 @@
 import { computed } from "mobx";
 import { isRTL } from "@shared/utils/rtl";
+import Document from "./Document";
 import User from "./User";
 import Model from "./base/Model";
 import Relation from "./decorators/Relation";
 
 class Revision extends Model {
-  id: string;
-
+  /** The document ID that the revision is related to */
   documentId: string;
 
+  /** The document that the revision is related to */
+  @Relation(() => Document, { onDelete: "cascade" })
+  document: Document;
+
   /** The document title when the revision was created */
   title: string;