get_secrets_for_dbus_paths
Description:
public async HashTable<string,Value> get_secrets_for_dbus_paths (string item_paths, Cancellable? cancellable) throws Error
  
  Get the secret values for a secret item stored in the service.
The items are represented by their D-Bus object paths. If you already have [classItem] proxy objects, use use [func
        Item.load_secrets] to more simply get their secret values.
This function returns immediately and completes asynchronously.
Parameters:
| this | the secret service | 
| item_paths | the D-Bus paths to items to retrieve secrets for | 
| cancellable | optional cancellation object | 
| callback | called when the operation completes | 
| user_data | data to pass to the callback |