getTab example

$mergedConfig = $this->getThemeConfiguration($themeId, $translate, $context)['fields'];

        $translations = [];
        if ($translate) {
            $translations = $this->getTranslations($themeId, $context);
            $mergedConfig = $this->translateLabels($mergedConfig, $translations);
        }

        $outputStructure = [];

        foreach ($mergedConfig as $fieldName => $fieldConfig) {
            $tab = $this->getTab($fieldConfig);
            $tabLabel = $this->getTabLabel($tab, $translations);
            $block = $this->getBlock($fieldConfig);
            $blockLabel = $this->getBlockLabel($block, $translations);
            $section = $this->getSection($fieldConfig);
            $sectionLabel = $this->getSectionLabel($section, $translations);

            // set default tab             $outputStructure['tabs']['default']['label'] = '';

            // set labels             $outputStructure['tabs'][$tab]['label'] = $tabLabel;