added convenience method isLogonMsgType()

Author: chrjohn

quickfixj-base/src/main/java/quickfix/MessageUtils.java

@@ -101,6 +101,7 @@ public static Message parse(MessageFactory messageFactory, DataDictionary dataDi
      * @param messageFactory
      * @param dataDictionary
      * @param messageString
+     * @param validateChecksum
      * @return the parsed message
      * @throws InvalidMessage
      */
@@ -129,6 +130,10 @@ public static boolean isLogon(String message) {
         return isMessageType(message, MsgType.LOGON);
     }
 
+    public static boolean isLogonMsgType(String msgType) {
+        return MsgType.LOGON.equals(msgType);
+    }
+
     private static boolean isMessageType(String message, String msgType) {
         try {
             return msgType.equals(getMessageType(message));