Add `switch` command

Change-Id: I5db53925f1710e29b49398621e6b634889f1df15
diff --git a/src/proxy_datastore.hpp b/src/proxy_datastore.hpp
index f084a2d..21fbfc5 100644
--- a/src/proxy_datastore.hpp
+++ b/src/proxy_datastore.hpp
@@ -28,6 +28,7 @@
     void discardChanges();
     void copyConfig(const Datastore source, const Datastore destination);
     [[nodiscard]] std::string dump(const DataFormat format) const;
+    void setTarget(const DatastoreTarget target);
 
     void initiate(const std::string& path);
     [[nodiscard]] DatastoreAccess::Tree execute();