+ /**
+ * @brief Get the available size in bytes of the current Storage
+ *
+ * @return The available size in bytes of the current Storage
+ */
+ virtual sg_size_t getFreeSize();
+
+ /**
+ * @brief Get the used size in bytes of the current Storage
+ *
+ * @return The used size in bytes of the current Storage
+ */
+ virtual sg_size_t getUsedSize();
+
+