diff --git a/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java b/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
index de523b24..d7663ff4 100644
--- a/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
+++ b/data/src/main/java/one/nem/lacerta/data/impl/DocumentImpl.java
@@ -1,4 +1,35 @@
 package one.nem.lacerta.data.impl;
 
-public class DocumentImpl {
+import java.util.ArrayList;
+
+import one.nem.lacerta.data.Document;
+
+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 class DocumentImpl implements Document{
+
+
+    @Override
+    public ArrayList<DocumentMeta> getRecentDocumentMetas(int limit) {
+        return null;
+    }
+
+    @Override
+    public ArrayList<DocumentMeta> getRecentDocumentMetas(int limit, int offset) {
+        return null;
+    }
+
+    @Override
+    public DocumentDetail getDocumentDetail(String id) {
+        return null;
+    }
+
+    @Override
+    public DocumentDetail getDocumentDetailByMeta(DocumentMeta meta) {
+        return null;
+    }
 }