diff --git a/common/test/mocked_utils.hpp b/common/test/mocked_utils.hpp
index f8f3665..71bc6e7 100644
--- a/common/test/mocked_utils.hpp
+++ b/common/test/mocked_utils.hpp
@@ -7,7 +7,6 @@
 {
 namespace utils
 {
-
 /** @brief helper function for parameter matching
  *  @param[in] lhs - left-hand side value
  *  @param[in] rhs - right-hand side value
@@ -36,4 +35,8 @@
 
     MOCK_METHOD(pldm::utils::PropertyValue, getDbusPropertyVariant,
                 (const char*, const char*, const char*), (const override));
+
+    MOCK_METHOD(pldm::utils::GetSubTreeResponse, getSubtree,
+                (const std::string&, int, const std::vector<std::string>&),
+                (const override));
 };
diff --git a/common/utils.hpp b/common/utils.hpp
index cc6db01..2ae7b86 100644
--- a/common/utils.hpp
+++ b/common/utils.hpp
@@ -138,7 +138,7 @@
 
 using PropertyValue =
     std::variant<bool, uint8_t, int16_t, uint16_t, int32_t, uint32_t, int64_t,
-                 uint64_t, double, std::string>;
+                 uint64_t, double, std::string, std::vector<std::string>>;
 using DbusProp = std::string;
 using DbusChangedProps = std::map<DbusProp, PropertyValue>;
 using DBusInterfaceAdded = std::vector<