/// <summary>
/// Get the file that will be read/written to
/// </summary>
/// <returns></returns>
public UnifiedFile GetFileFromProperty(PageData page, string propertyName)
{
    var filePath = page.Property[propertyName] != null
                       ? (string)page.Property[propertyName].Value
                       : string.Empty;
    if (string.IsNullOrEmpty(filePath)) return null;