public function create(array $suppressions)
    {
        foreach ($suppressions as $suppression) {
            $this->assertValidSuppression($suppression);
        }

        $request = new Request('suppressions');
        $request->setParams(['subscribers' => $suppressions]);

        $response = $this->client->post($request);

        $this->assertSuccessResponse($response);

        return $response->getData();
    }