fix test

datahub-graphql-core/src/test/java/com/linkedin/datahub/graphql/resolvers/browse/BrowseV2ResolverTest.java

@@ -264,7 +264,7 @@ private static EntityClient initMockEntityClient(
                 Mockito.eq(start),
                 Mockito.eq(limit),
                 Mockito.any(Authentication.class),
-                Mockito.any(SearchFlags.class)))
+                Mockito.nullable(SearchFlags.class)))
         .thenReturn(result);
     return client;
   }