Add models for getLanguage, getMediaType

Author: smowton

java/ql/lib/semmle/code/java/frameworks/JaxWS.qll

@@ -977,7 +977,7 @@ private class ContainerRequestContextModel extends SourceModelCsv {
       ["javax", "jakarta"] + ".ws.rs.container;ContainerRequestContext;true;" +
         [
           "getAcceptableLanguages", "getAcceptableMediaTypes", "getCookies", "getEntityStream",
-          "getHeaders", "getHeaderString", "getUriInfo"
+          "getHeaders", "getHeaderString", "getLanguage", "getMediaType", "getUriInfo"
         ] + ";;;ReturnValue;remote"
   }
 }

java/ql/test/library-tests/frameworks/JaxWs/JakartaContainerRequestContextSources.java

@@ -12,6 +12,8 @@ void test(ContainerRequestContext context) throws Exception {
     sink(buf); // $ hasTaintFlow
     sink(context.getHeaders().getFirst("someKey")); // $ hasTaintFlow
     sink(context.getHeaderString("someKey")); // $ hasValueFlow
+    sink(context.getLanguage()); // $ hasValueFlow
+    sink(context.getMediaType().getType()); // $ hasTaintFlow
     sink(context.getUriInfo().getPath()); // $ hasTaintFlow
   }
 }

java/ql/test/library-tests/frameworks/JaxWs/JaxRsContainerRequestContextSources.java

@@ -12,6 +12,8 @@ void test(ContainerRequestContext context) throws Exception {
     sink(buf); // $ hasTaintFlow
     sink(context.getHeaders().getFirst("someKey")); // $ hasTaintFlow
     sink(context.getHeaderString("someKey")); // $ hasValueFlow
+    sink(context.getLanguage()); // $ hasValueFlow
+    sink(context.getMediaType().getType()); // $ hasTaintFlow
     sink(context.getUriInfo().getPath()); // $ hasTaintFlow
   }
 }