Umb 8.6.1

Upgrading V7 code to V8

In a class that gets images from an API and stuffs them into appropriate folders in Media I need to check the folder exists and if not, create it. As we can't now get Children easily and it doesn't look like I have IPublishedContent available either I'm looking for some help with syntax converting this (which works in V7):-

var propertiesRootFolder = mediaService.GetRootMedia().FirstOrDefault(m => m.Name.InvariantEquals("Properties"));
IMedia propertyFolder = propertiesRootFolder?.Children().FirstOrDefault(c => c.Name.InvariantEquals(propertyFolderName));

To V8.6.1. What I've got so far is this:-

var propertiesRootFolder = mediaService.GetRootMedia().FirstOrDefault(m => m.Name.InvariantEquals("Properties"));
IMedia propertyFolder = propertiesRootFolder?.GetPagedChildren(1, 0, int.MaxValue, out var folderCount).Where(x => x.ContentType.Alias == Constants.Conventions.MediaTypes.Folder).FirstOrDefault(c => c.Name.InvariantEquals(propertyFolderName));

Which complains about IMedia not having GetPagedChildren and c.Name not being available and the docs aren't helping atm.

Any advice would be appreciated.

/ Craig