code: @Deprecated
      public static void setTreatNullAsAbsent(boolean treatNullAsAbsent) {
          if (treatNullAsAbsent) {
              configuration = configuration.withOptions(TREATING_NULL_AS_ABSENT);
          } else {
              configuration = configuration.withOptions(configuration.getOptions().without(TREATING_NULL_AS_ABSENT));
          }
      }
docs: When set to true, treats null nodes in actual value as absent. In other words
  if you expect {"test":{"a":1}} this {"test":{"a":1, "b": null}} will pass the test.
  
  @deprecated use setOptions(Option.TREATING_NULL_AS_ABSENT)