private void setUpDefaultJsonToObjectTransformers() {
this.json_to_object_transformer = Transformer.newInstance().clear().setup_built_in_transformers()
.with_b(new NullTransformation())
.and_b(new DateMillisToDateTransformer())
.and_b(new JsonBooleanTransformer())
.and_b(new JsonIntegerTransformer())
.and_b(new JsonStringTransformer())
.and_b(new JsonDoubleTransformer())
.and_b(new JsonDoubleToFloatTransformer())
.and_b(new JsonObjectAsMapTransformer())