private void SeedPositions(IEnumerable <EmployeeDto> employees)
        {
            foreach (var employee in employees)
            {
                var positionName     = employee.Position.Name;
                var containsPosition = this.positions.Local.Where(p => p.Name == positionName).Any();
                if (!containsPosition)
                {
                    var position = new Position()
                    {
                        Name = positionName
                    };

                    this.positions.Add(position);
                }
            }

            data.SaveChanges();
        }