Moved all extension methods into extension blocks (#1155)

app/MindWork AI Studio/Settings/DataModel/MailboxTransportSecurityExtensions.cs

@@ -16,23 +16,26 @@ public static class MailboxTransportSecurityExtensions
 
     private static string TB(string fallbackEN) => I18N.I.T(fallbackEN, typeof(MailboxTransportSecurityExtensions).Namespace, nameof(MailboxTransportSecurityExtensions));
 
-    public static string GetName(this MailboxTransportSecurity transportSecurity) => transportSecurity switch
+    extension(MailboxTransportSecurity transportSecurity)
     {
-        MailboxTransportSecurity.SSL_ON_CONNECT => TB("TLS from the start (usually port 993)"),
-        MailboxTransportSecurity.STARTTLS => TB("STARTTLS (usually port 143)"),
+        public string GetName() => transportSecurity switch
+        {
+            MailboxTransportSecurity.SSL_ON_CONNECT => TB("TLS from the start (usually port 993)"),
+            MailboxTransportSecurity.STARTTLS => TB("STARTTLS (usually port 143)"),
 
-        _ => TB("Unknown encryption"),
-    };
+            _ => TB("Unknown encryption"),
+        };
 
-    /// <summary>
-    /// The port the encryption usually comes with.
-    /// </summary>
-    /// <returns>The port, or null when there is no usual one.</returns>
-    public static int? GetUsualPort(this MailboxTransportSecurity transportSecurity) => transportSecurity switch
-    {
-        MailboxTransportSecurity.SSL_ON_CONNECT => SSL_ON_CONNECT_PORT,
-        MailboxTransportSecurity.STARTTLS => STARTTLS_PORT,
+        /// <summary>
+        /// The port the encryption usually comes with.
+        /// </summary>
+        /// <returns>The port, or null when there is no usual one.</returns>
+        public int? GetUsualPort() => transportSecurity switch
+        {
+            MailboxTransportSecurity.SSL_ON_CONNECT => SSL_ON_CONNECT_PORT,
+            MailboxTransportSecurity.STARTTLS => STARTTLS_PORT,
 
-        _ => null,
-    };
+            _ => null,
+        };
+    }
 }