@Test
public void testExtensionTransformationExecution() throws ScriptException, IOException, NoSuchMethodException, URISyntaxException {

	String extensionFunc = resourceFileToString("extension.js");
	transformationFunction = new TransformationFunction("1", extensionFunc);
	JsonNode result = executionEngine.execute(jsonData, transformationFunction);
	Assert.assertEquals("This is an extension", result.get("extension").asText());
}