public void SetUp()
        {
            _psParser = Substitute.For <IPsParser>();
            _psParser.UserTokens.Returns(new List <UserToken>());
            _psParserFactory = Substitute.For <IPsParserFactory>();
            _psParserFactory.BuildPsParser(PsFile, Arg.Any <string>(), Arg.Any <string>()).Returns(_psParser);

            _userTokenExtractor = new UserTokenExtractor(_psParserFactory);
        }