FIx errorprone detected issues

hapi-fhir-jaxrsserver-base/src/main/java/ca/uhn/fhir/jaxrs/server/AbstractJaxRsPageProvider.java

@@ -111,4 +111,9 @@ public abstract class AbstractJaxRsPageProvider extends AbstractJaxRsProvider im
 		return BundleInclusionRule.BASED_ON_INCLUDES;
 	}
 
+	@Override
+	public PreferReturnEnum getDefaultPreferReturn() {
+		return PreferReturnEnum.REPRESENTATION;
+	}
+
 }

hapi-fhir-jaxrsserver-base/src/main/java/ca/uhn/fhir/jaxrs/server/AbstractJaxRsResourceProvider.java

@@ -340,7 +340,12 @@ implements IRestfulServer<JaxRsRequest>, IResourceProvider {
         return BundleInclusionRule.BASED_ON_INCLUDES;
     }
 
-    /**
+	@Override
+	public PreferReturnEnum getDefaultPreferReturn() {
+		return PreferReturnEnum.REPRESENTATION;
+	}
+
+	/**
      * The resource type should return conform to the generic resource included
      * in the topic
      */

hapi-fhir-server/src/main/java/ca/uhn/fhir/rest/api/server/IRestfulServer.java

@@ -31,7 +31,6 @@ public interface IRestfulServer<T extends RequestDetails> extends IRestfulServer
 
 	BundleInclusionRule getBundleInclusionRule();
 
-	void setDefaultPreferReturn(PreferReturnEnum theDefaultPreferReturn);
-
 	PreferReturnEnum getDefaultPreferReturn();
+
 }

hapi-fhir-server/src/main/java/ca/uhn/fhir/rest/server/RestfulServer.java

@@ -1660,7 +1660,6 @@ public class RestfulServer extends HttpServlet implements IRestfulServer<Servlet
 	 *
 	 * @see <a href="http://hl7.org/fhir/http.html#ops">HL7 FHIR Specification</a> section on the Prefer header
 	 */
-	@Override
 	public void setDefaultPreferReturn(PreferReturnEnum theDefaultPreferReturn) {
 		Validate.notNull(theDefaultPreferReturn, "theDefaultPreferReturn must not be null");
 		myDefaultPreferReturn = theDefaultPreferReturn;