/// <summary>
/// 删除
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public virtual async Task DeleteAsync(string id)
{
var entity = await _workflowDefinitionRepository.GetAsync(id);
var all = await PersistenceProvider.GetAllRunnablePersistedWorkflow(entity.Id, entity.Version);
if (all.Count() > 0)
{
throw new UserFriendlyException("删不了！！还有没有执行完的流程！");
}
if (_registry.IsRegistered(entity.Id.ToString(), entity.Version))
{
_registry.DeregisterWorkflow(entity.Id.ToString(), entity.Version);
}
await _workflowDefinitionRepository.DeleteAsync(entity);
}