minor changes

LeStorage/StoreCenter.swift

@@ -627,7 +627,7 @@ public class StoreCenter {
         
     }
 
-    func testSynchronizeOnceAsync() async throws -> Data {
+    @discardableResult func testSynchronizeOnceAsync() async throws -> Data {
         guard self.isAuthenticated else {
             throw StoreError.missingToken
         }

LeStorage/SyncedCollection.swift

@@ -278,7 +278,7 @@ public class SyncedCollection<T : SyncedStorable>: SomeSyncedCollection, Collect
     // MARK: - Asynchronous operations
     
     /// Adds or update an instance asynchronously and waits for network operations
-    func addOrUpdateAsync(instance: T) async throws {
+    public func addOrUpdateAsync(instance: T) async throws {
         let result = _addOrUpdateCore(instance: instance)
         if result.method == .insert {
             try await self._executeBatchOnce(OperationBatch(insert: instance))
@@ -287,7 +287,7 @@ public class SyncedCollection<T : SyncedStorable>: SomeSyncedCollection, Collect
         }
     }
     
-    func addOrUpdateAsync(contentOfs sequence: any Sequence<T>) async throws {
+    public func addOrUpdateAsync(contentOfs sequence: any Sequence<T>) async throws {
         let batch = self._addOrUpdateCore(contentOfs: sequence)
         try await self._executeBatchOnce(batch)
     }
@@ -300,7 +300,7 @@ public class SyncedCollection<T : SyncedStorable>: SomeSyncedCollection, Collect
     }
     
     /// Deletes an instance and writes
-    func deleteAsync(instance: T) async throws {
+    public func deleteAsync(instance: T) async throws {
         self.collection.delete(instance: instance, actionOption: .syncedCascade)
         self.storeCenter.createDeleteLog(instance)
         try await self._executeBatchOnce(OperationBatch(delete: instance))