// Protected implementation of Dispose pattern.
        protected virtual void Dispose(bool disposing)
        {
            if (disposed)
            {
                return;
            }

            if (disposing)
            {
                // Free any managed objects here.
                layoutPageObject.Dispose();
                composeModalPageObject.Dispose();
                messageListPageObject.Dispose();
                messagePageObject.Dispose();
            }

            disposed = true;
        }