src/Adapter/PsrRequestAdapter.php
public function getNamedParam(string $category, string $key)
    {
        $params = $this->getNamedParams($category);
        return $params[$key] ?? '';
    }
public function getNamedParam(string $category, string $key)
    {
        $params = $this->getNamedParams($category);
        return $params[$key] ?? '';
    }
Return named parameter

@param string $category
@param string $key

@return mixed