Add ContextResolver as valid provider class
diff --git a/provider-rs/src/main/java/org/apache/cxf/dosgi/dsw/handlers/rest/RsProvider.java b/provider-rs/src/main/java/org/apache/cxf/dosgi/dsw/handlers/rest/RsProvider.java
index 7b46571..5ef58d2 100644
--- a/provider-rs/src/main/java/org/apache/cxf/dosgi/dsw/handlers/rest/RsProvider.java
+++ b/provider-rs/src/main/java/org/apache/cxf/dosgi/dsw/handlers/rest/RsProvider.java
@@ -29,6 +29,7 @@
 import java.util.Map;
 import java.util.Set;
 
+import javax.ws.rs.ext.ContextResolver;
 import javax.ws.rs.ext.ExceptionMapper;
 import javax.ws.rs.ext.MessageBodyReader;
 import javax.ws.rs.ext.MessageBodyWriter;
@@ -178,7 +179,8 @@
     private boolean isProvider(Object intent) {
         return (intent instanceof ExceptionMapper) // 
             || (intent instanceof MessageBodyReader) //
-            || (intent instanceof MessageBodyWriter);
+            || (intent instanceof MessageBodyWriter) //
+            || (intent instanceof ContextResolver);
     }
 
     private boolean configTypeSupported(Map<String, Object> endpointProps, String configType) {