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
return extendsRef;
		}
		assert false;
		return null;
	}
	/**
	 * Sets the value of an intrinsic property. This should be called only from
	 * a command or the design parser. The property name must be valid, and the
	 * value must be valid for that property.
	 * <p>
	 * This class has two intrinsic properties:
	 * <ul>
	 * <li><strong>name </strong>-- The element name. The property value must
	 * be null or a String.
	 * <li><strong>extends </strong>-- The element that this element extends.
	 * Must be a String (for an unresolved name), DesignElement (for a resolved
	 * name) or null. The caller should ensure canExtend of this element is
	 * true.
	 * </ul>
	 * 
	 * @param propName
	 *            The name of the intrinsic property.
	 * @param value
	 *            The value to set for the property.
	 */
	protected void setIntrinsicProperty( String propName, Object value )
	{
		if ( propName.equals( NAME_PROP ) )
		{
			setName( (String) value );