/// <summary>
/// Loads a picture from file
/// </summary>
/// <param name="pictureId">Picture identifier</param>
/// <param name="mimeType">MIME type</param>
/// <returns>Picture binary</returns>
protected virtual byte[] LoadPictureFromFile(int pictureId, string mimeType)
{
string lastPart = GetFileExtensionFromMimeType(mimeType);
string fileName = $"{pictureId:0000000}_0.{lastPart}";
string filePath = GetPictureLocalPath(fileName);
return(_fileProvider.ReadAllBytes(filePath));
}