diff --git a/src/blenderbim/blenderbim/core/tool.py b/src/blenderbim/blenderbim/core/tool.py
index 0ba921fbfa..4a6ce898eb 100644
--- a/src/blenderbim/blenderbim/core/tool.py
+++ b/src/blenderbim/blenderbim/core/tool.py
@@ -133,6 +133,22 @@ class Debug:
     def purge_hdf5_cache(cls): pass
 
 
+@interface
+class Document:
+    def disable_document_assignment_ui(cls, obj): pass
+    def disable_editing_document(cls): pass
+    def disable_editing_ui(cls): pass
+    def enable_document_assignment_ui(cls, obj): pass
+    def enable_information_editing_ui(cls): pass
+    def enable_reference_editing_ui(cls): pass
+    def export_document_attributes(cls): pass
+    def import_document_attributes(cls, document): pass
+    def import_information(cls): pass
+    def import_references(cls): pass
+    def is_document_information(cls, document): pass
+    def set_active_document(cls, document): pass
+
+
 @interface
 class Drawing:
     def create_annotation_object(cls, object_type): pass