Refreshing a Form with Multiple Root Data Sources

public void closeOk()
{
    FormRun formRun;
    List dsList;
    ListEnumerator dsListEnumerator;
    FormDataSource formDS;
    
    super();
    
    // Get an instance of the calling form.
    formRun = element.args().caller();
    
    // If the caller is a form, find and refresh the specified root data source.
    if(formRun)
    {
        dsList = formRun.rootFormDataSources();
        
        if(dsList && dsList.elements() > 0)
        {
            dsListEnumerator = dsList.getEnumerator();
            
            while(dsListEnumerator.moveNext())
            {
                formDS = dsListEnumerator.current();
                if(formDS.table() == tableNum(Table1))
                {
                    formDS.research(true);
                    break;
                }
            }
        }
    }
}