/// <summary>
            /// Cloning constructor.
            /// </summary>
            /// <param name="source">The source object from which to clone.</param>
            /// <param name="context">The cloning context object.</param>
            private PlaceholderPresentationImage(PlaceholderPresentationImage source, ICloningContext context)
                : base(source, context)
            {
                _sopReference = source._sopReference.Clone();

                context.CloneFields(source, this);
            }
            /// <summary>
            /// Cloning constructor.
            /// </summary>
            /// <param name="source">The source object from which to clone.</param>
            /// <param name="context">The cloning context object.</param>
            private PlaceholderPresentationImage(PlaceholderPresentationImage source, ICloningContext context)
                : base(source, context)
            {
                _sopReference = source._sopReference.Clone();

                context.CloneFields(source, this);
            }