public function importUsers($users, $format = 'php')
    {
        $data = array(
            'token' => $this->apiToken,
            'content' => 'user',
            'returnFormat' => 'json'
        );
        
        #----------------------------------------------------
        # Process arguments
        #----------------------------------------------------
        $legalFormats = array('csv', 'json', 'php', 'xml');
        $data['format'] = $this->processFormatArgument($format, $legalFormats);
        $data['data']   = $this->processImportDataArgument($users, 'users', $format);
        
        #---------------------------------------------------
        # Get and process users
        #---------------------------------------------------
        $result = $this->connection->callWithArray($data);
        $this->processNonExportResult($result);
        
        return (integer) $result;
    }