diff --git a/data/src/main/java/one/nem/lacerta/data/impl/CommonsImpl.java b/data/src/main/java/one/nem/lacerta/data/impl/CommonsImpl.java
new file mode 100644
index 00000000..bef046fd
--- /dev/null
+++ b/data/src/main/java/one/nem/lacerta/data/impl/CommonsImpl.java
@@ -0,0 +1,4 @@
+package one.nem.lacerta.data.impl;
+
+public class CommonsImpl {
+}
diff --git a/data/src/main/java/one/nem/lacerta/data/model/commons/placeholder b/data/src/main/java/one/nem/lacerta/data/model/commons/placeholder
new file mode 100644
index 00000000..e69de29b
diff --git a/data/src/main/java/one/nem/lacerta/data/module/CommonsModule.java b/data/src/main/java/one/nem/lacerta/data/module/CommonsModule.java
new file mode 100644
index 00000000..c7a28163
--- /dev/null
+++ b/data/src/main/java/one/nem/lacerta/data/module/CommonsModule.java
@@ -0,0 +1,4 @@
+package one.nem.lacerta.data.module;
+
+public class CommonsModule {
+}
diff --git a/data/src/main/java/one/nem/lacerta/data/repository/Commons.java b/data/src/main/java/one/nem/lacerta/data/repository/Commons.java
new file mode 100644
index 00000000..7e390d91
--- /dev/null
+++ b/data/src/main/java/one/nem/lacerta/data/repository/Commons.java
@@ -0,0 +1,4 @@
+package one.nem.lacerta.data.repository;
+
+public interface Commons {
+}