Bug 120062 Default name of parameter and theme is not displayed as setting in preference.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/newelement/DesignElementFactory.java
{
		String newName = getNewName( ReportDesignConstants.EXTENDED_ITEM, name );
		return factory.newExtendedItem( newName, extensionName );
	}
	/**
	 * Creates a new script data source.
	 * 
	 * @param name
	 *            the required script data source name.
	 * @return a handle to script data source
	 */
	public ScriptDataSourceHandle newScriptDataSource( String name )
	{
		String newName = getNewName( ReportDesignConstants.SCRIPT_DATA_SOURCE,
				name );
		return factory.newScriptDataSource( newName );
	}
	/**
	 * Creates a new script data set. The name is required. If the
	 * <code>name</code> is null, we will make a unique name for it.
	 * 
	 * @param name
	 *            the required script data set name.
	 * @return a handle to script data set
	 */
	public ScriptDataSetHandle newScriptDataSet( String name )
	{
		String newName = getNewName( ReportDesignConstants.SCRIPT_DATA_SET,
				name );
		return factory.newScriptDataSet( newName );