public IRepositoryResult Find(int id)
        {
            if (_db == null)
            {
                var message = "Database is not available at the moment";
                var exception = new TaskTrackerException("DB context is null", new NullReferenceException());
                _erResult = new EmployeeRepositoryResult(message, exception);

                return _erResult;
            }

            if (id < 1)
            {
                var message = "Invalid identification number was specified";
                var exception = new TaskTrackerException($"Invalid ID [{id}]", new ArgumentOutOfRangeException());
                _erResult = new EmployeeRepositoryResult(message, exception);
            }

            var dbEmp = _db.Employees.Find(id);
            if (dbEmp == null)
            {
                var message = "No employee was found";
                var exception = new TaskTrackerObjectNotFoundException($"Employee with ID [{id}] not found");
                _erResult = new EmployeeRepositoryResult(message, exception);

                return _erResult;
            }

            AttEmployee employee = new AttEmployee(dbEmp.ID)
            {
                Name = dbEmp.Name,
                Surname = dbEmp.Surname,
                EUID = dbEmp.EUID
            };

            var objects = new List<ISecurableObject>() { employee };
            _erResult = new EmployeeRepositoryResult(objects);

            return _erResult;
        }
        public IRepositoryResult Get(ISecurableObject obj)
        {
            if (_db?.Employees == null)
            {
                var message = "Database is not available at the moment";
                var exception = new TaskTrackerException("DB context is null", new NullReferenceException());
                _erResult = new EmployeeRepositoryResult(message, exception);

                return _erResult;
            }

            var dbEmp = _db.Employees.ToList();
            if (dbEmp.Count == 0)
            {
                var message = "No employees were found";
                var exception = new TaskTrackerObjectNotFoundException("Employees not found");
                _erResult = new EmployeeRepositoryResult(message, exception);

                return _erResult;
            }

            var employees = dbEmp.Select(employee => new AttEmployee(employee.ID)
            {
                Name = employee.Name,
                Surname = employee.Surname,
                EUID = employee.EUID
            });

            _erResult = new EmployeeRepositoryResult(employees);

            return _erResult;
        }