- Added missing method

src/IPub/Flickr/ApiCall.php

@@ -89,6 +89,17 @@ public function getConsumer()
 		return $this->consumer;
 	}
 
+	/**
+	 * Determines the access token that should be used for API calls.
+	 * The first time this is called, $this->accessToken is set equal
+	 * to either a valid user access token, or it's set to the application
+	 * access token if a valid user access token wasn't available.  Subsequent
+	 * calls return whatever the first call returned.
+	 *
+	 * @return OAuth\Token The access token
+	 */
+	abstract public function getAccessToken();
+
 	/**
 	 * @param string $path
 	 * @param array $params