diff --git a/data/src/main/java/one/nem/lacerta/data/processor/DocumentProcessor.java b/data/src/main/java/one/nem/lacerta/data/processor/DocumentProcessor.java
new file mode 100644
index 00000000..5a735e18
--- /dev/null
+++ b/data/src/main/java/one/nem/lacerta/data/processor/DocumentProcessor.java
@@ -0,0 +1,4 @@
+package one.nem.lacerta.data.processor;
+
+public interface DocumentProcessor {
+}
diff --git a/data/src/main/java/one/nem/lacerta/data/processor/impl/DocumentProcessorImpl.java b/data/src/main/java/one/nem/lacerta/data/processor/impl/DocumentProcessorImpl.java
new file mode 100644
index 00000000..2994f9fe
--- /dev/null
+++ b/data/src/main/java/one/nem/lacerta/data/processor/impl/DocumentProcessorImpl.java
@@ -0,0 +1,4 @@
+package one.nem.lacerta.data.processor.impl;
+
+public class DocumentProcessorImpl {
+}