Bug 199009 [Automation][Regression] 2D percent stacked area chart did not render properly
steps to reproduce: - use the attached report design - preview in html expected behavior: - chart was renderred properly actual behavior: - it simply did not do so please refer to the attached screen captures
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/DeferredCacheManager.java
}
	}
	/**
	 * Create new <code>DeferredCache</code> instance.
	 * 
	 * @return <code>DeferredCache</code> instance.
	 */
	DeferredCache createDeferredCache( )
	{
		DeferredCache dc = new DeferredCache( fDeviceRenderer, fChart );
		fDeferredCacheList.add( dc );
		return dc;
	}
	/**
	 * Create <code>DeferredCache</code> instance for signle case, the related
	 * <code>DeferredCache</code> will be only created once.
	 * 
	 * @return instance of <code>DeferredCache</code>.
	 */
	DeferredCache createSingleDeferredCache( )
	{
		if ( fSingleDC != null )
		{
			return fSingleDC;
		}
		fSingleDC = new DeferredCache( fDeviceRenderer, fChart );
		fDeferredCacheList.add( fSingleDC );
		return fSingleDC;
	}