Add generator for BrokerId to customize the ToString method.

src/main/java/org/apache/activemq/nms/openwire/tool/commands/BrokerIdGenerator.java

@@ -0,0 +1,27 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq.nms.openwire.tool.commands;
+
+import java.io.PrintWriter;
+
+public class BrokerIdGenerator extends CommandClassGenerator {
+
+    protected void generateToStringBody( PrintWriter out ) {
+        out.println("            return this.value;");
+    }
+
+}