How do i get the available free space in Universal Windows Phone 10 programmatically, as AvailableFreeSpace property does not exist in UWP 10
public long GetFreeSize()
{
    using (var isolatedStorageFile = IsolatedStorageFile.GetUserStoreForApplication())
    {
        var sizeInBytes = isolatedStorageFile.AvailableFreeSpace;//this AvailableFreeSpace proprrty doesnt exist in uwp
        var sizeInKB = sizeInBytes / 1024.0;
        var sizeInMB = sizeInKB / 1024.0;
        var sizeInGB = sizeInMB / 1024.0;
    }
    return (long)0;
}