Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* 
	 * @return theme handles according the input level
	 */
	public List getVisibleThemes( int level )
	{
		List elementList = module.getNameHelper( ).getElements(
				Module.THEME_NAME_SPACE, level );
		return generateHandleList( sortVisibleElements( elementList, level ) );
	}
	/**
	 * Returns parameters and parameter groups on the module. Those parameters
	 * included in the parameter groups are not included in the return list.
	 * 
	 * @return parameters and parameter groups
	 */
	public List getParametersAndParameterGroups( )
	{
		SlotHandle params = getSlot( PARAMETER_SLOT );
		List retList = new ArrayList( );
		for ( int i = 0; i < params.getCount( ); i++ )
		{
			retList.add( params.get( i ) );
		}
		return retList;
	}
	/**
	 * Returns all data source handles that this modules and the included
	 * modules contain.
	 * 
	 * @return all data source handles that this modules and the included