public string Execute(IList <string> parameters)
{
var firstName = parameters[0];
var lastName = parameters[1];
var grade = (Grade)int.Parse(parameters[2]);
currentStudentId = IdGenerator.Instance.StudentId;
var student = studentFactory.GetStudent(firstName, lastName, grade);
Engine.Students.Add(currentStudentId, student);
return($"A new student with name {firstName} {lastName}, grade {grade} and ID {currentStudentId} was created.");
}
