Document when someone should want to use store_id

Author: TheBlueMatt

src/builder.rs

@@ -575,6 +575,11 @@ impl NodeBuilder {
 	///
 	/// `fixed_headers` are included as it is in all the requests made to VSS.
 	///
+	/// `store_id` allows you to segment LDK Node storage from other storage accessed with
+	/// [`VssStoreBuilder`] using the same [`NodeEntropy`] (as storage with different keys is
+	/// obviously segmented to prevent wallets from reading data for unrelated wallets). It can be
+	/// any value.
+	///
 	/// **Caution**: VSS support is in **alpha** and is considered experimental.
 	/// Using VSS (or any remote persistence) may cause LDK to panic if persistence failures are
 	/// unrecoverable, i.e., if they remain unresolved after internal retries are exhausted.
@@ -603,6 +608,11 @@ impl NodeBuilder {
 	/// The returned JWT token in response to the signed LNURL request, will be used for
 	/// authentication/authorization of all the requests made to VSS.
 	///
+	/// `store_id` allows you to segment LDK Node storage from other storage accessed with
+	/// [`VssStoreBuilder`] using the same authentication (as storage with different keys is
+	/// obviously segmented to prevent wallets from reading data for unrelated wallets). It can be
+	/// any value.
+	///
 	/// `fixed_headers` are included as it is in all the requests made to VSS and LNURL auth server.
 	///
 	/// **Caution**: VSS support is in **alpha** and is considered experimental.