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/Module.java
}
	/**
	 * Finds a data source by name in this module and the included modules.
	 * 
	 * @param name
	 *            the name of the data source to find.
	 * @return the data source, or null if the data source is not found.
	 */
	public DesignElement findDataSource( String name )
	{
		return resolveElement( name, DATA_SOURCE_NAME_SPACE, null );
	}
	/**
	 * Finds a data set by name in this module and the included modules.
	 * 
	 * @param name
	 *            the name of the data set to find.
	 * @return the data set, or null if the data set is not found.
	 */
	public DesignElement findDataSet( String name )
	{
		return resolveElement( name, DATA_SET_NAME_SPACE, null );
	}
	/**
	 * Finds a master page by name in this module and the included modules.
	 * 
	 * @param name
	 *            the master page name.
	 * @return the master page, if found, otherwise null.
	 */