[Modify] Edit it

websocket-sharp/Server/WebSocketSessionManager.cs

@@ -1319,6 +1319,9 @@ namespace WebSocketSharp.Server
     ///   <see langword="null"/> if not necessary.
     ///   </para>
     /// </param>
+    /// <exception cref="ArgumentException">
+    /// <paramref name="id"/> is an empty string.
+    /// </exception>
     /// <exception cref="ArgumentNullException">
     ///   <para>
     ///   <paramref name="id"/> is <see langword="null"/>.
@@ -1330,9 +1333,6 @@ namespace WebSocketSharp.Server
     ///   <paramref name="data"/> is <see langword="null"/>.
     ///   </para>
     /// </exception>
-    /// <exception cref="ArgumentException">
-    /// <paramref name="id"/> is an empty string.
-    /// </exception>
     /// <exception cref="InvalidOperationException">
     ///   <para>
     ///   The session could not be found.