[FSSDK-12670] Add comment explaining the < 2 identifiers guard

jaeopt · claude · jaeopt · commit 8149c82dbb61 · 2026-05-27T13:49:09.000-07:00
Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/OptimizelySDK/Odp/OdpEventManager.cs b/OptimizelySDK/Odp/OdpEventManager.cs
@@ -383,6 +383,8 @@ public void IdentifyUser(string userId)
                 .Where(kvp => !string.IsNullOrEmpty(kvp.Value))
                 .ToDictionary(kvp => kvp.Key, kvp => kvp.Value);
 
+            // Identify requires 2+ identifiers to link (e.g., vuid + fs_user_id).
+            // A single identifier has no cross-reference value and generates unnecessary traffic.
             if (validIdentifiers.Count < 2)
             {
                 _logger.Log(LogLevel.DEBUG,

Original file line number	Diff line number	Diff line change
`@@ -383,6 +383,8 @@ public void IdentifyUser(string userId)`
`383`	`383`	`.Where(kvp => !string.IsNullOrEmpty(kvp.Value))`
`384`	`384`	`.ToDictionary(kvp => kvp.Key, kvp => kvp.Value);`
`385`	`385`
	`386`	`+ // Identify requires 2+ identifiers to link (e.g., vuid + fs_user_id).`
	`387`	`+ // A single identifier has no cross-reference value and generates unnecessary traffic.`
`386`	`388`	`if (validIdentifiers.Count < 2)`
`387`	`389`	`{`
`388`	`390`	`_logger.Log(LogLevel.DEBUG,`