ShowList funtion in DRY section does not return a list

ShowList funtion should return an object of List, currently does not return anything

public List ShowList(Employee employees) { foreach (var employee in employees) { var expectedSalary = employees.CalculateExpectedSalary(); var experience = employees.GetExperience(); var githubLink = employees.GetGithubLink(); var data = new[] { expectedSalary, experience, githubLink };

    render(data);
}

}