diff --git a/src/handler.hpp b/src/handler.hpp
index 74cb234..9e692e5 100644
--- a/src/handler.hpp
+++ b/src/handler.hpp
@@ -24,3 +24,47 @@
 std::vector<std::string> getSubTreePaths(const InterfaceMapType& interfaceMap,
                                          std::string reqPath, int32_t depth,
                                          std::vector<std::string>& interfaces);
+
+/**
+ * @brief Get the Associated Sub Tree object
+ *
+ * @param interfaceMap     Mapper Structure storing all associations
+ * @param associationMaps  Map of association between objects
+ * @param associationPath  Object path to get the endpoint from
+ * @param reqPath          Base path to search for the subtree
+ * @param depth            Level of depth to search into the base path
+ * @param interfaces       Interface filter
+ *
+ * Use getSubTree and return only the dbus objects that are in the endpoint
+ * of associationPath.
+ *
+ * @return std::vector<InterfaceMapType::value_type>
+ */
+std::vector<InterfaceMapType::value_type>
+    getAssociatedSubTree(const InterfaceMapType& interfaceMap,
+                         const AssociationMaps& associationMaps,
+                         const sdbusplus::message::object_path& associationPath,
+                         const sdbusplus::message::object_path& reqPath,
+                         int32_t depth, std::vector<std::string>& interfaces);
+
+/**
+ * @brief Get the Associated Sub Tree Paths object
+ *
+ * @param interfaceMap     Mapper Structure storing all associations
+ * @param associationMaps  Map of association between objects
+ * @param associationPath  Object path to get the endpoint from
+ * @param reqPath          Base path to search for the subtree
+ * @param depth            Level of depth to search into the base path
+ * @param interfaces       Interface filter
+ *
+ * Use getSubTreePaths and return only the dbus objects that are in the
+ * endpoint of associationPath.
+ *
+ * @return std::vector<std::string>
+ */
+std::vector<std::string> getAssociatedSubTreePaths(
+    const InterfaceMapType& interfaceMap,
+    const AssociationMaps& associationMaps,
+    const sdbusplus::message::object_path& associationPath,
+    const sdbusplus::message::object_path& reqPath, int32_t depth,
+    std::vector<std::string>& interfaces);