code: def get_included_databases(self):
          
          databases = set()
          databases.update(self._plain_db.keys())
  
          for _, namespace in self._regex_map:
              database_name, _ = namespace.source_name.split(".", 1)
              if "*" in database_name:
                  return []
              databases.add(database_name)
  
          return list(databases)
docs: Return the databases we want to include, or empty list for all.