change method modifier to protected
diff --git a/struts2-custom-results-plugin/src/main/java/org/apache/struts2/result/SslOffloadAwareServletRedirectResult.java b/struts2-custom-results-plugin/src/main/java/org/apache/struts2/result/SslOffloadAwareServletRedirectResult.java
index 6a1b4d3..c540ad0 100644
--- a/struts2-custom-results-plugin/src/main/java/org/apache/struts2/result/SslOffloadAwareServletRedirectResult.java
+++ b/struts2-custom-results-plugin/src/main/java/org/apache/struts2/result/SslOffloadAwareServletRedirectResult.java
@@ -160,7 +160,7 @@
         return "https".equals(request.getHeader("X-Forwarded-Proto")) || hasForwardedHeaderWithProtoParamHttps(request);
     }
 
-    private boolean hasForwardedHeaderWithProtoParamHttps(HttpServletRequest request) {
+    protected boolean hasForwardedHeaderWithProtoParamHttps(HttpServletRequest request) {
         Enumeration<String> forwardedHeaders = request.getHeaders("Forwarded");
 
         if (forwardedHeaders == null) {