Bug 136241 [regression]Preview template in web viewer and pdf didn't get correct effect.
Description: Preview template items in web viewer and pdf didn't get correct effect. Steps to reproduce: 1. Create template items. 2. Preview in Web Viewer and pdf. Expected result: Same effect as in html. Actual result: In web viewer, see only blank box. In pdf, blank page.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
*/
	public List resolveElementReferenceList( Module module,
			ElementPropertyDefn prop )
	{
		Object value = propValues.get( prop.getName( ) );
		assert value == null || value instanceof List;
		assert prop.getTypeCode( ) == PropertyType.LIST_TYPE
				&& prop.getSubTypeCode( ) == PropertyType.ELEMENT_REF_TYPE;
		if ( value == null )
			return null;
		List valueList = (List) value;
		for ( int i = 0; i < valueList.size( ); i++ )
		{
			
			ElementRefValue item = (ElementRefValue) valueList.get( i );
			resolveElementReference( module, prop, item );
		}
		return valueList;
	}
	/**
	 * Resolves a property element reference. The reference is the value of a
	 * property of type property element reference.
	 * 
	 * @param module
	 *            the module information needed for the check, and records any
	 *            errors
	 * @param prop
	 *            the property whose type is element reference
	 * @param value
	 *            the element reference value to resolve