diff --git a/source/src/main/java/one/nem/lacerta/source/file/FileManager.java b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
index d3951a7e..82b503bc 100644
--- a/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
+++ b/source/src/main/java/one/nem/lacerta/source/file/FileManager.java
@@ -20,4 +20,8 @@ public interface FileManager {
     Bitmap loadBitmap(Path path);
     void removeBitmap(Path path);
 
+    void saveFileAtCurrent(File file);
+    File getFile(Path path);
+    void removeFile(Path path);
+
 }
diff --git a/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java b/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java
index 5a8ffa64..43778c5b 100644
--- a/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java
+++ b/source/src/main/java/one/nem/lacerta/source/file/impl/FileManagerImpl.java
@@ -103,4 +103,20 @@ public class FileManagerImpl implements FileManager {
     public void removeBitmap(Path path) {
 
     }
+
+    @Override
+    public void saveFileAtCurrent(File file) {
+
+    }
+
+    @Override
+    public File getFile(Path path) {
+        return null;
+    }
+
+    @Override
+    public void removeFile(Path path) {
+
+    }
+
 }