Add docblocks for classes and interfaces in Ramsey\Uuid\Provider namespace

src/Provider/Node/FallbackNodeProvider.php

@@ -16,15 +16,34 @@ namespace Ramsey\Uuid\Provider\Node;
 
 use Ramsey\Uuid\Provider\NodeProviderInterface;
 
+/**
+ * FallbackNodeProvider attempts to gain the system host ID from an array of
+ * providers, falling back to the next in line in the event a host ID can not be
+ * obtained
+ */
 class FallbackNodeProvider implements NodeProviderInterface
 {
+    /**
+     * @var NodeProviderInterface[]
+     */
     private $nodeProviders;
 
+    /**
+     * Constructs a `FallbackNodeProvider` using an array of node providers
+     *
+     * @param NodeProviderInterface[] $providers Array of node providers
+     */
     public function __construct(array $providers)
     {
         $this->nodeProviders = $providers;
     }
 
+    /**
+     * Returns the system node ID by iterating over an array of node providers
+     * and returning the first non-empty value found
+     *
+     * @return string System node ID as a hexadecimal string
+     */
     public function getNode()
     {
         foreach ($this->nodeProviders as $provider) {