Fix Code Style in all files

Author: Steveb-p

DbalConsumer.php

@@ -13,8 +13,8 @@
 
 class DbalConsumer implements Consumer
 {
-    use ConsumerPollingTrait,
-        DbalConsumerHelperTrait;
+    use ConsumerPollingTrait;
+    use DbalConsumerHelperTrait;
 
     /**
      * @var DbalContext

DbalMessage.php

@@ -49,7 +49,7 @@ class DbalMessage implements Message
     private $timeToLive;
 
     /**
-     * @var null|string
+     * @var string|null
      */
     private $deliveryId;
 

Tests/DbalConsumerTest.php

@@ -79,12 +79,12 @@ public function testShouldDeleteMessageOnAcknowledge()
         $context
             ->expects($this->once())
             ->method('getDbalConnection')
-            ->will($this->returnValue($dbal))
+            ->willReturn($dbal)
         ;
         $context
             ->expects($this->once())
             ->method('getTableName')
-            ->will($this->returnValue('some-table-name'))
+            ->willReturn('some-table-name')
         ;
 
         $consumer = new DbalConsumer($context, $queue);
@@ -150,12 +150,12 @@ public function testShouldDeleteMessageFromQueueOnReject()
         $context
             ->expects($this->once())
             ->method('getDbalConnection')
-            ->will($this->returnValue($dbal))
+            ->willReturn($dbal)
         ;
         $context
             ->expects($this->once())
             ->method('getTableName')
-            ->will($this->returnValue('some-table-name'))
+            ->willReturn('some-table-name')
         ;
 
         $consumer = new DbalConsumer($context, $queue);
@@ -182,7 +182,7 @@ public function testRejectShouldReSendMessageToSameQueueOnRequeue()
         $context
             ->expects($this->once())
             ->method('createProducer')
-            ->will($this->returnValue($producerMock))
+            ->willReturn($producerMock)
         ;
 
         $consumer = new DbalConsumer($context, $queue);

Tests/DbalSubscriptionConsumerTest.php

@@ -153,7 +153,7 @@ private function createDbalContextMock()
     }
 
     /**
-     * @param null|mixed $queueName
+     * @param mixed|null $queueName
      *
      * @return Consumer|\PHPUnit_Framework_MockObject_MockObject
      */