Bug 182053 [Automation][Regression] Visibility does not work properly in html and viewer
steps to reproduce: - create a report - add any report item - hide this report item in pdf - preview in html and viewer expected behavior: - this report item should be shown actual behavior: - this report item was not shown
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/emitter/ContentEmitterUtil.java
IContentEmitter emitter = (IContentEmitter) value;
			emitter.startList( list );
			return value;
		}
		public Object visitListBand( IListBandContent listBand, Object value )
		{
			IContentEmitter emitter = (IContentEmitter) value;
			emitter.startListBand( listBand );
			return value;
		}
		public Object visitGroup( IGroupContent group, Object value )
		{
			IContentEmitter emitter = (IContentEmitter) value;
			emitter.startGroup( group );
			return value;
		}
		public Object visitListGroup( IListGroupContent group, Object value )
		{
			IContentEmitter emitter = (IContentEmitter) value;
			emitter.startListGroup( group );
			return value;
		}
		public Object visitTableGroup( ITableGroupContent group, Object value )
		{
			IContentEmitter emitter = (IContentEmitter) value;
			emitter.startTableGroup( group );
			return value;
		}
	}
	static private class EndContentVisitor implements IContentVisitor