add findByReferenceId in readme.md

myparcelnl · Sep 23, 2019 · ae7b572 · ae7b572
1 parent 64de874
commit ae7b572
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diff --git a/README.md b/README.md
@@ -206,6 +206,15 @@ echo $myParcelCollection
     ->getLinkOfLabels();
 ```
 
+If you want to download a label at a later time, you can also use the following to fill the collection:
+```
+$collection = MyParcelCollection::findByReferenceId('999999', 'xxxxxx');
+$collection
+    ->setPdfOfLabels()
+    ->downloadPdfOfLabels();
+```
+Instead of `findByReferenceId()` you can also use `findManyByReferenceId()`, `find()` or `findMany()`.
+
 More information: https://myparcelnl.github.io/api/#6_F
 
 ## List of classes and their methods