diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..d25b9f1
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel>
+      <module name="wedroid.wrapper.main" target="1.8" />
+      <module name="wedroid.wrapper.test" target="1.8" />
+    </bytecodeTargetLevel>
+  </component>
+</project>
\ No newline at end of file
diff --git a/wrapper/src/main/java/wekan/wrapper/api/CardService.java b/wrapper/src/main/java/wekan/wrapper/api/CardService.java
new file mode 100644
index 0000000..f70e9e0
--- /dev/null
+++ b/wrapper/src/main/java/wekan/wrapper/api/CardService.java
@@ -0,0 +1,4 @@
+package wekan.wrapper.api;
+
+public interface CardService {
+}
diff --git a/wrapper/src/main/java/wekan/wrapper/entity/Card.java b/wrapper/src/main/java/wekan/wrapper/entity/Card.java
new file mode 100644
index 0000000..d1b3ea6
--- /dev/null
+++ b/wrapper/src/main/java/wekan/wrapper/entity/Card.java
@@ -0,0 +1,4 @@
+package wekan.wrapper.entity;
+
+public class Card {
+}
diff --git a/wrapper/src/test/java/wekan/wrapper/api/CardServiceTest.java b/wrapper/src/test/java/wekan/wrapper/api/CardServiceTest.java
new file mode 100644
index 0000000..bb69155
--- /dev/null
+++ b/wrapper/src/test/java/wekan/wrapper/api/CardServiceTest.java
@@ -0,0 +1,4 @@
+package wekan.wrapper.api;
+
+public class CardServiceTest {
+}