/// <summary>
 /// Finds the by identifier asynchronous.
 /// </summary>
 /// <param name="id">The identifier.</param>
 /// <param name="token">The cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
 /// <returns>Task&lt;EmployeeModel&gt;.</returns>
 public Task <EmployeeModel> FindByIdAsync(int id, CancellationToken token)
 {
     token.ThrowIfCancellationRequested();
     return(Task.Run(() => _emp.Employee(id)));
 }