refactore getName of Reference

Author: juliendidier

src/Gitonomy/Git/Reference.php

@@ -56,6 +56,13 @@ public function __construct(Repository $repository, $fullname, $commitHash)
         $this->commitHash = $commitHash;
     }
 
+    /**
+     * Returns the usual name of the reference.
+     *
+     * @return string
+     */
+    abstract public function getName();
+
     /**
      * Returns the fullname of the reference.
      *

src/Gitonomy/Git/Reference/Branch.php

@@ -22,9 +22,7 @@
 class Branch extends Reference
 {
     /**
-     * Returns the name of the branch.
-     *
-     * @return string
+     * {@inheritdoc}
      */
     public function getName()
     {

src/Gitonomy/Git/Reference/Tag.php

@@ -22,9 +22,7 @@
 class Tag extends Reference
 {
     /**
-     * Returns the name of the tag.
-     *
-     * @return string
+     * {@inheritdoc}
      */
     public function getName()
     {