+ * @brief Retrieves dependency information of the package.
+ * @details The results include packages that are only directly required by a given package.
+ * For example, if we have:
+ *
+ * B --> E
+ * A --> B --> C
+ * D --> C
+ *
+ * where A --> B means that A depends on B, and package_info_foreach_dependency_info(A) is called,
+ * the results will be: {from A to B}.
+ * @since_tizen 5.5
+ * @remarks The function provides the results synchronously. If there are no dependencies, this function will return PACKAGE_MANAGER_ERROR_NONE immediately and the callback will not be invoked.
+ * @param[in] package_info The package information
+ * @param[in] callback The iteration callback function
+ * @param[in] user_data The user data to be passed to the callback function
+ * @return @c 0 on success,
+ * otherwise a negative error value
+ * @retval #PACKAGE_MANAGER_ERROR_NONE Successful
+ * @retval #PACKAGE_MANAGER_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval #PACKAGE_MANAGER_ERROR_SYSTEM_ERROR Severe system error
+ */
+int package_info_foreach_dependency_info(package_info_h package_info, package_info_dependency_info_cb callback, void *user_data);
+
+/**
+ * @brief Retrieves information about which packages depend on a given package.
+ * @details The results include packages that both directly and indirectly depend on a given package.
+ * For example, if we have:
+ *
+ * B --> E
+ * A --> B --> C
+ * D --> C
+ *
+ * where A --> B means that A depends on B, and package_info_foreach_dependency_info_depends_on(C) is called,
+ * the results will be: {from B to C}, {from D to C}, {from A to B}.
+ * @since_tizen 5.5
+ * @remarks The function provides the results synchronously. If there are no dependencies, this function will return PACKAGE_MANAGER_ERROR_NONE immediately and the callback will not be invoked.
+ * @param[in] package_info The package information
+ * @param[in] callback The iteration callback function
+ * @param[in] user_data The user data to be passed to the callback function
+ * @return @c 0 on success,
+ * otherwise a negative error value
+ * @retval #PACKAGE_MANAGER_ERROR_NONE Successful
+ * @retval #PACKAGE_MANAGER_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval #PACKAGE_MANAGER_ERROR_SYSTEM_ERROR Severe system error
+ */
+int package_info_foreach_dependency_info_depends_on(package_info_h package_info, package_info_dependency_info_cb callback, void *user_data);
+
+/**