Generic parameter 'T' could not be inferred when calling function

I have a function :

static func create<T>(userId: Int, streamId: Int, isPushStream: Bool = false, delegateToController controller: T? = nil) -> ShowUserInfoVC where T: UIViewController, T: ShowUserInfoVCDelegate {
    let showUserInfoVC = ShowUserInfoVC()
    showUserInfoVC.modalTransitionStyle = .crossDissolve
    showUserInfoVC.modalPresentationStyle = .overCurrentContext
    showUserInfoVC.delegate = controller
    showUserInfoVC.userId = userId
    showUserInfoVC.streamId = streamId
    showUserInfoVC.isPushStream = isPushStream
    return showUserInfoVC
}

When I call:

let vc = ShowUserInfoVC.create(userId: id, streamId: id)

It says error:

Generic parameter 'T' could not be inferred