Trait is closer to what caldav servers provide

src/event.rs

@@ -4,6 +4,7 @@ use serde::{Deserialize, Serialize};
 use chrono::{Utc, DateTime};
 
 use crate::item::ItemId;
+use crate::item::VersionTag;
 
 /// TODO: implement Event one day.
 /// This crate currently only supports tasks, not calendar events.
@@ -12,6 +13,7 @@ pub struct Event {
     id: ItemId,
     name: String,
     last_modified: DateTime<Utc>,
+    version_tag: VersionTag,
 }
 
 impl Event {
@@ -26,4 +28,8 @@ impl Event {
     pub fn last_modified(&self) -> DateTime<Utc> {
         self.last_modified
     }
+
+    pub fn version_tag(&self) -> &VersionTag {
+        &self.version_tag
+    }
 }