how todo when I want to push or present one VC in MVVC

[wellcheng]

In this project，I did not saw any code like 'push' 、'present' and 'dismiss'.
and in real-world, I must push some controller use navigationController.

with my own mind, I think should put this push or dismiss code in 'pageCoordinate',
some thing like this:

In ListCoordinator.swift ：

extension ListCoordinator: ListViewModelCoordinatorDelegate
{
    func listViewModelDidSelectData(_ viewModel: ListViewModel, data: DataItem)
    {
        detailCoordinator = DetailCoordinator(window: window, dataItem: data, nav:self.navigationController)
        detailCoordinator?.delegate = self
        detailCoordinator?.start() // within ,push detail controller
    }
}


extension ListCoordinator: DetailCoordinatorDelegate
{
    func detailCoordinatorDidFinish(detailCoordinator: DetailCoordinator)
    {
        self.detailCoordinator = nil
        self.dismiss ...
    }
}

is it a right way?