src/HttpHeaders/AddHttpHeadersMiddleware.php
public function addHeaders(array $headers):void
    {
        foreach ($headers as $name => $value) {
            $this->addHeader((string)$name, $value);
        }
    }
public function addHeaders(array $headers):void
    {
        foreach ($headers as $name => $value) {
            $this->addHeader((string)$name, $value);
        }
    }
Adds multiple headers.

@param array $headers