<?php
namespace Vendor\Extension\ViewHelpers;

use Vendor\Extension\Domain\Repository\TeammemberRepository;

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface;

class TestViewHelper 
    extends \TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
{
    use \TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;

    public static function renderStatic(
        array $arguments, \Closure $renderChildrenClosure,
        RenderingContextInterface $renderingContext
    ) {
        $om = GeneralUtility::makeInstance(
            \TYPO3\CMS\Extbase\Object\ObjectManager::class
        );
        $memberRepo = $om->get(TeammemberRepository::class);
    }
}
?>