public message()
 {
     if ((this.attachmentField == null))
     {
         this.attachmentField = new stream_attachment();
     }
 }
		public stream_post()
		{
			if ((this.likesField == null))
			{
				this.likesField = new stream_likes();
			}
			if ((this.commentsField == null))
			{
				this.commentsField = new stream_comments();
			}
			if ((this.action_linksField == null))
			{
				this.action_linksField = new stream_postAction_links();
			}
			if ((this.app_dataField == null))
			{
				this.app_dataField = new stream_app_data();
			}
			if ((this.attachmentField == null))
			{
				this.attachmentField = new stream_attachment();
			}
		}