ios_xcuitest.md in appium_lib-9.3.5

- old
+ new
@@ -51,9 +51,16 @@
 ```ruby
 textfield(value) # Return a XCUIElementTypeSecureTextField or XCUIElementTypeTextField element which has `value` text.
 finds_exact(value) # Return any elements include `value` as its name attributes.
 ```
 
+### with Class Chain
+- require Appium 1.6.4+
+    - https://github.com/appium/appium-xcuitest-driver/pull/391
+    - https://github.com/appium/java-client/pull/599/files
+- WebDriverAgent
+    - https://github.com/facebook/WebDriverAgent/wiki/Queries
+
 ### with XPath
 - It is better to avoid XPath strategy.
     - https://github.com/appium/appium/blob/v1.6.2/docs/en/advanced-concepts/migrating-to-xcuitest.md#xpath-locator-strategy
         - > Try not to use XPath locators unless there are absolutely no other alternatives. In general, XPath locators might be times slower, than other types of locators like accessibility id, class name and predicate (up to 100 times slower in some special cases). They are so slow because XPath location is not natively supported by Apple's XCTest framework.
     - Improved performance a bit