diff --git a/src/newcrawler/identifiable_adapters.py b/src/newcrawler/identifiable_adapters.py
index 5bddc64cf61f14c9fbb77b7f96afdcc65d0a33ee..ff40a11f60ff6ad08d0b3137ae65dce9db7fa24d 100644
--- a/src/newcrawler/identifiable_adapters.py
+++ b/src/newcrawler/identifiable_adapters.py
@@ -121,10 +121,6 @@ class IdentifiableAdapter(object):
         """
         pass
 
-    @abstractmethod
-    def resolve_reference(self, record: db.Record):
-        pass
-
     def get_identifiable(self, record: db.Record):
         """
         retrieve the registred identifiable and fill the property values to create an
@@ -223,8 +219,9 @@ class LocalStorageIdentifiableAdapter(IdentifiableAdapter):
         with open(filename, "r") as f:
             self._records = db.Container().from_xml(f.read())
 
-    # TODO: move to super class?
-    def is_identifiable_for_record(self, registered_identifiable: db.RecordType, record: db.Record):
+    def is_identifiable_for_record(self,
+                                   registered_identifiable: db.RecordType,
+                                   record: db.Record):
         """
         Check whether this registered_identifiable is an identifiable for the record.
 
@@ -301,22 +298,6 @@ class LocalStorageIdentifiableAdapter(IdentifiableAdapter):
             return None
         return candidates[0]
 
-    def resolve_reference(self, value: db.Record):
-        if self.get_registered_identifiable(value) is None:
-            raise NotImplementedError("Non-identifiable references cannot"
-                                      " be used as properties in identifiables.")
-            # TODO: just resolve the entity
-
-        value_identifiable = self.retrieve_identified_record(value)
-        if value_identifiable is None:
-            raise RuntimeError("The identifiable which is used as property"
-                               " here has to be inserted first.")
-
-        if value_identifiable.id is None:
-            raise RuntimeError("The entity has not been assigned an ID.")
-
-        return value_identifiable.id
-
 
 class CaosDBIdentifiableAdapter(IdentifiableAdapter):
     """