[at-spi2-core: 7/19] Accessible.xml: document the AccessibleId property

[Federico Mena Quintero <federico src gnome org>]

commit dc05184d7ff97bde7b1bea6e68588b24f44f7689
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Jul 5 15:12:50 2022 -0500

    Accessible.xml: document the AccessibleId property

 xml/Accessible.xml | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/xml/Accessible.xml b/xml/Accessible.xml
index bac47c8b..01a55664 100644
--- a/xml/Accessible.xml
+++ b/xml/Accessible.xml
@@ -66,6 +66,15 @@
     -->
     <property name="Locale" type="s" access="read"/>
 
+    <!--
+        AccessibleId: application-spcific identifier for the current object.
+
+        You can use this to give a special id to an object to use in tests, for example,
+        "my_widget".  Note that there is no way to directly find an object by its id; your
+        test program may have to recursively get the children to find a specific id.  This
+        is because accessible objects can be created dynamically, and they do not always
+        correspond to a static view of an application's data.
+    -->
     <property name="AccessibleId" type="s" access="read"/>
 
     <method name="GetChildAtIndex">