anchor.diff:        example = literalExample "null";
         description = ''
             Set the interval how often full repairs are run, i.e.
  -          `nodetool repair --full` is executed. See
  +          <literal>nodetool repair --full</literal> is executed. See
             https://cassandra.apache.org/doc/latest/operating/repair.html
             for more information.
   
  -          Set to `null` to disable full repairs.
  +          Set to <literal>null</literal> to disable full repairs.
           '';
       };
       fullRepairOptions = mkOption {
  
positive.code:         { assertion = cfg.remoteJmx -> cfg.jmxRolesFile != null;
            message = ''
              If you want JMX available remotely you need to set a password using
              `jmxRoles` or `jmxRolesFile` if using Cassandra older than v3.11.
            '';
          }
        ];
  
negative.code:       example = literalExample "null";
        description = ''
            Set the interval how often incremental repairs are run, i.e.
            <literal>nodetool repair<literal> is executed. See
            https://cassandra.apache.org/doc/latest/operating/repair.html
            for more information.
  
            Set to <literal>null</literal> to disable incremental repairs.
          '';
      };
      incrementalRepairOptions = mkOption {
  