Merge branch 'feature/4742' into develop

Close zendframework/zendframework#4742

src/LoggerAwareInterface.php

@@ -16,5 +16,19 @@
  */
 interface LoggerAwareInterface
 {
+    /**
+     * Set logger instance
+     *
+     * @param LoggerInterface
+     * @return void
+     */
     public function setLogger(LoggerInterface $logger);
+
+    /**
+     * Get logger instance. Currently commented out as this would possibly break
+     * existing implementations.
+     *
+     * @return null|LoggerInterface
+     */
+    // public function getLogger();
 }

src/LoggerAwareTrait.php

@@ -30,4 +30,14 @@ public function setLogger(LoggerInterface $logger)
 
         return $this;
     }
+
+    /**
+     * Get logger object
+     *
+     * @return null|LoggerInterface
+     */
+    public function getLogger()
+    {
+        return $this->logger;
+    }
 }