@Test
public void getDefineFunctionsMethodMapSupportedExpression() {

    List<DefineFunction> defineFunctions = supportedExpressionSupplier.stream().map(defineFunctionCreator).collect(Collectors.toList());
    Map<String, MethodDeclaration> retrieved = DefineFunctionUtils.getDefineFunctionsMethodMap(defineFunctions);
    assertEquals(defineFunctions.size(), retrieved.size());
}