public bool AddPrerequisity(Task task, Task prerequisity)
{
if (!task.Prerequisities)
{
task.Prerequisities = true;
_tasksManager.UpdateTask(task);
return(_tasksManager.AddPrerequisityForTask(task.Id, prerequisity.Id));
}
return(_tasksManager.AddPrerequisityForTask(task.Id, prerequisity.Id));
}