docs: def process_raw(self, raw: str) -> None:
          """Pre-process raw string.
  
          Prepare users to work with APIItems.
          Create booleans with user levels.
          """
          raw_dict = dict(group.split('=') for group in raw.splitlines())
  
          raw_users = {
              user: {
                  group: user in REGEX_STRING.findall(raw_dict[group])
                  for group in [ADMIN, OPERATOR, VIEWER, PTZ]
              }
              for user in REGEX_STRING.findall(raw_dict['users'])
          }
  
          super().process_raw(raw_users)