diff --git a/src/main/java/pl/jalokim/propertiestojson/resolvers/JsonTypeResolver.java b/src/main/java/pl/jalokim/propertiestojson/resolvers/JsonTypeResolver.java
index <HASH>..<HASH> 100644
--- a/src/main/java/pl/jalokim/propertiestojson/resolvers/JsonTypeResolver.java
+++ b/src/main/java/pl/jalokim/propertiestojson/resolvers/JsonTypeResolver.java
@@ -15,6 +15,11 @@ public abstract class JsonTypeResolver {
     protected String propertiesKey;
     protected ObjectJsonType currentObjectJsonType;
 
+    /**
+     * Don't remove this it will be used by others in own custom type resolvers.
+     * @see <a href="https://github.com/mikolajmitura/java-properties-to-json/issues/34">issue 34</a>
+     * @return propertiesKey
+     */
     public String getPropertiesKey() {
 		return propertiesKey;
 	}
#<I> don't remove comment for unused method.