public function testCheckInboxIgnoresBadFromDate()
 {
     $firstResponse = $this->client->checkInbox(0, null, 1);
     $response = $this->client->checkInbox(0, '20', 1);
     $this->assertCount(count($firstResponse->getMessages()), $response->getMessages());
     $this->assertInstanceOf(Inbox::class, $response);
     $response = $response->getMessages();
     $this->assertTrue(is_array($response));
     $this->assertLessThanOrEqual(Inbox::PAGE_LIMIT, count($response));
     foreach ($response as $sms) {
         $this->assertInstanceOf(IncomingSMS::class, $sms);
     }
 }