Bug 130492 Provide a method to serialize the report with library information.
Currently, when engine generate the report document file, the document does not contain any library information. That will cause many propblem on server side. Model should provide a method to serialize the report with library information to a stream so that the generated report document can contain all information that the report need.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
REF_TEMPLATE_PARAMETER_PROP );
		if ( templateParam == null )
			return null;
		return (TemplateParameterDefinition) templateParam.getElement( );
	}
	/**
	 * Returns a list of the descendents of this element. The descendents
	 * include elements that directly extend from this one, along with elements
	 * that extend from those, and so on recursively.
	 * <p>
	 * Part of: Inheritance system.
	 * 
	 * @return The list of descendents.
	 */
	public List getDescendents( )
	{
		ArrayList list = new ArrayList( );
		gatherDescendents( list );
		return list;
	}
	/**
	 * Builds up a list of the elements that extend from this one, directly or
	 * indirectly.
	 * <p>
	 * Part of: Inheritance system.
	 * 
	 * @param list
	 *            The list of descendents.
	 */
	public void gatherDescendents( ArrayList list )