package water.exceptions;

import org.jboss.netty.handler.codec.http.HttpResponseStatus;

public class H2ONotFoundArgumentException extends H2OIllegalArgumentException {
  final protected int HTTP_RESPONSE_CODE() { return HttpResponseStatus.NOT_FOUND.getCode(); }

  public H2ONotFoundArgumentException(String msg, String dev_msg) {
    super(msg, dev_msg);
  }
}

@@ -354,11 +354,89 @@
 sg);%0A  %7D
+%0A%0A  public H2ONotFoundArgumentException(String msg) %7B%0A    super(msg, msg);%0A  %7D
 %0A%7D%0A

Add one argument constructor.