diff --git a/data/src/main/java/one/nem/lacerta/data/DocumentDebug.java b/data/src/main/java/one/nem/lacerta/data/DocumentDebug.java
index dc58a668..94ae5b42 100644
--- a/data/src/main/java/one/nem/lacerta/data/DocumentDebug.java
+++ b/data/src/main/java/one/nem/lacerta/data/DocumentDebug.java
@@ -1,4 +1,12 @@
 package one.nem.lacerta.data;
 
+import one.nem.lacerta.model.document.DocumentMeta;
+import one.nem.lacerta.model.document.DocumentDetail;
+import one.nem.lacerta.model.document.path.DocumentPath;
+import one.nem.lacerta.model.document.tag.DocumentTag;
+
 public interface DocumentDebug {
+
+    void insertDocument(DocumentMeta meta, DocumentDetail detail);
+
 }