DOC: more docstrings in sync_graph

src/caoscrawler/sync_graph.py

@@ -307,7 +307,10 @@ class SyncGraph():
         return None
 
     def _get_new_id(self):
-        """ returns the next unused temporary ID"""
+        """ returns the next unused temporary ID
+
+        Last review by Alexander Schlemmer on 2024-05-24.
+        """
         self._remote_missing_counter -= 1
         return self._remote_missing_counter
 
@@ -346,6 +349,8 @@ class SyncGraph():
         """returns a set of nodes that reference the given node as identifying property or are
         referenced by the given node and the parent of the given node is listed as
         "is_referenced_by"
+
+        Last review by Alexander Schlemmer on 2024-05-24.
         """
         return (self.backward_id_references[id(node)].union(
                 self.forward_id_referenced_by[id(node)]))