/// <summary>
 /// Gets the hash code
 /// </summary>
 /// <returns>Hash code</returns>
 public override int GetHashCode()
 {
     unchecked // Overflow is fine, just wrap
     {
         int hashCode = 41;
         hashCode = hashCode * 59 + WarningCode.GetHashCode();
         hashCode = hashCode * 59 + PageNumber.GetHashCode();
         hashCode = hashCode * 59 + PageImageNumber.GetHashCode();
         if (ExtWarningMessage != null)
         {
             hashCode = hashCode * 59 + ExtWarningMessage.GetHashCode();
         }
         return(hashCode);
     }
 }