Add snippet for Session resume

Author: devbridie

xr/src/main/java/com/example/xr/runtime/Session.kt

@@ -22,6 +22,8 @@ import androidx.xr.compose.platform.LocalSession
 import androidx.xr.runtime.Session
 import androidx.xr.runtime.SessionCreatePermissionsNotGranted
 import androidx.xr.runtime.SessionCreateSuccess
+import androidx.xr.runtime.SessionResumePermissionsNotGranted
+import androidx.xr.runtime.SessionResumeSuccess
 
 // [START androidxr_localsession]
 @Composable
@@ -42,3 +44,18 @@ fun Activity.createSession() {
     }
     // [END androidxr_session_create]
 }
+
+fun sessionResume(session: Session) {
+    // [START androidxr_session_resume]
+    when (val result = session.resume()) {
+        is SessionResumeSuccess -> {
+            // Session has been created successfully.
+            // Attach any successful handlers here.
+        }
+
+        is SessionResumePermissionsNotGranted -> {
+            // Request permissions in `result.permissions`.
+        }
+    }
+    // [END androidxr_session_resume]
+}