Fix MfApi restart invoke by passing empty param arrays instead of null.

Co-authored-by: Cursor <cursoragent@cursor.com>

ZA.CoreService.ESBCertificateManager/Tools/SonicMfContainerTool.java

@@ -15,7 +15,7 @@ import javax.management.ObjectName;
 public final class SonicMfContainerTool
 {
     public static final String TOOL_VERSION =
-        "2026-07-29-validate-restart";
+        "2026-07-29-restart-empty-params";
 
     public static void main(String[] args)
     {
@@ -251,21 +251,32 @@ public final class SonicMfContainerTool
         info("ObjectName=" + objectName);
 
         StringBuffer attempts = new StringBuffer();
-        String[] operations = new String[]
+
+        // 1) restart (bevorzugt)
+        // 2) stop + start (Fallback; manche Agenten haben kein restart)
+        String[][] plans = new String[][]
         {
-            "stop",
-            "restart"
+            { "restart" },
+            { "stop", "start" }
         };
 
-        for (int index = 0; index < operations.length; index++)
+        for (int planIndex = 0; planIndex < plans.length; planIndex++)
         {
-            String operation = operations[index];
+            String[] operations = plans[planIndex];
 
             try
             {
-                info("Trying MBean.invoke(" + operation + ")");
-                invokeNoArgs(connector, objectName, operation);
-                okRestart("MBean." + operation, shortName, domain);
+                for (int index = 0; index < operations.length; index++)
+                {
+                    String operation = operations[index];
+                    info("Trying MBean.invoke(" + operation + ")");
+                    invokeNoArgs(connector, objectName, operation);
+                }
+
+                okRestart(
+                    "MBean." + joinOps(operations),
+                    shortName,
+                    domain);
                 return;
             }
             catch (Throwable throwable)
@@ -273,7 +284,7 @@ public final class SonicMfContainerTool
                 Throwable root = rootOf(throwable);
                 String line =
                     "MBean."
-                    + operation
+                    + joinOps(operations)
                     + " => "
                     + root.getClass().getName()
                     + ": "
@@ -288,6 +299,23 @@ public final class SonicMfContainerTool
             "Neustart fehlgeschlagen:\n" + attempts.toString());
     }
 
+    private static String joinOps(String[] operations)
+    {
+        StringBuffer buffer = new StringBuffer();
+
+        for (int index = 0; index < operations.length; index++)
+        {
+            if (index > 0)
+            {
+                buffer.append('+');
+            }
+
+            buffer.append(operations[index]);
+        }
+
+        return buffer.toString();
+    }
+
     private static void invokeNoArgs(
         Object connector,
         ObjectName objectName,
@@ -312,14 +340,18 @@ public final class SonicMfContainerTool
                 "invoke(...) wurde nicht gefunden.");
         }
 
+        // Sonic JMSConnectorClient verlangt leere Arrays, nicht null.
+        Object[] params = new Object[0];
+        String[] signature = new String[0];
+
         invokeMethod.invoke(
             connector,
             new Object[]
             {
                 objectName,
                 operation,
-                null,
-                null
+                params,
+                signature
             });
     }