Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/elements/Theme.java
operation = new CssStyleSheetAdapter( );
		operation.insertCss( css, index );
	}
	/**
	 * Returns only csses this module includes directly.
	 * 
	 * @return list of csses. each item is <code>CssStyleSheet</code>
	 */
	public List getCsses( )
	{
		if ( operation == null )
			return Collections.EMPTY_LIST;
		return operation.getCsses( );
	}
	/**
	 * Makes a unique name for this element.
	 * 
	 * @param element
	 */
	public void makeUniqueName( DesignElement element )
	{
		if ( element == null )
			return;
		if ( !( element instanceof StyleElement ) )
			return;
		
		if ( element.getRoot( ) != null )
			return;
		String name = StringUtil.trimString( element.getName( ) );