Add doc block for #3960

cakephp · Jul 13, 2014 · 6189cc1 · 6189cc1
1 parent 2ae046a
commit 6189cc1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/Model/Behavior/TreeBehavior.php b/src/Model/Behavior/TreeBehavior.php
@@ -41,6 +41,11 @@ class TreeBehavior extends Behavior {
  */
 	protected $_table;
 
+/**
+ * Cached copy of the first column in a table's primary key.
+ *
+ * @var string
+ */
 	protected $_primaryKey;
 
 /**