docs: bits on writing serializers

docs/collections/_development/docs.md

@@ -11,3 +11,5 @@ Building /docs/ locally:
 `bundle install`
 
 `bundle exec jekyll serve --incremental --port $PORT --host $IP`
+
+[Gude for installing bundle](https://help.dreamhost.com/hc/en-us/articles/115001070131-Using-Bundler-to-install-Ruby-gems)

docs/collections/_development/serializers.md

@@ -0,0 +1,41 @@
+---
+title: Serializers
+order: 220
+---
+
+All object serializers must be named ZCL_ABAPGIT_OBJECT_"type", where type is the corresponding TADIR-OBJECT type
+
+Use SAP Standard APIs for retriving and updating object information where possible.
+If not possible try using ZCL_ABAPGIT_OBJECTS_GENERIC
+
+Serializers must implement interface ZIF_ABAPGIT_OBJECT:
+
+``ZIF_ABAPGIT_OBJECT~SERIALIZE`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~DESERIALIZE`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~DELETE`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~EXISTS`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~IS_LOCKED`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~CHANGED_BY`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~JUMP`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~GET_METADATA`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~HAS_CHANGED_SINCE`` 
+todo
+
+``ZIF_ABAPGIT_OBJECT~COMPARE_TO_REMOTE_VERSION`` 
+todo