code: def env_is_exposed(self, tgt_env):
          '''
          Check if an environment is exposed by comparing it against a whitelist
          and blacklist.
          '''
          return salt.utils.stringutils.check_whitelist_blacklist(
              tgt_env,
              whitelist=self.saltenv_whitelist,
              blacklist=self.saltenv_blacklist,
          f env_is_exposed(self, tgt_env):
          '''
          Check if an environment is exposed by comparing it against a whitelist
          and blacklist.
          '''
          return salt.utils.stringutils.check_whitelist_blacklist(
              tgt_env,
              whitelist=self.saltenv_whitelist,
              blacklist=self.saltenv_blacklist,
          )
docs: Check if an environment is exposed by comparing it against a whitelist
          and blacklist.