PHPDoc updated

lib/private/session/memory.php

@@ -63,6 +63,11 @@ class Memory extends Session {
 		$this->data = array();
 	}
 
+	/**
+	 * In case the session has already been locked an exception will be thrown
+	 *
+	 * @throws \Exception
+	 */
 	private function validateSession() {
 		if ($this->sessionClosed) {
 			throw new \Exception('Session has been closed - no further changes to the session as allowed');

lib/private/session/session.php

@@ -12,6 +12,11 @@ use OCP\ISession;
 
 abstract class Session implements \ArrayAccess, ISession {
 
+	/**
+	 * @var bool
+	 */
+	protected $sessionClosed = false;
+
 	/**
 	 * $name serves as a namespace for the session keys
 	 *
@@ -50,8 +55,9 @@ abstract class Session implements \ArrayAccess, ISession {
 		$this->remove($offset);
 	}
 
-	protected $sessionClosed = false;
-
+	/**
+	 * Close the session and release the lock
+	 */
 	public function close() {
 		$this->sessionClosed = true;
 	}