anchor.diff:      incrementalRepairInterval = mkOption {
         type = types.nullOr types.str;
         default = "3d";
  -      example = literalExample "null";
  +      example = null;
         description = ''
           Set the interval how often incremental repairs are run, i.e.
           <literal>nodetool repair</literal> is executed. See
  
positive.code:     rpcAddress = mkOption {
        type = types.nullOr types.str;
        default = "127.0.0.1";
        example = literalExample "null";
        description = ''
          The address or interface to bind the native transport server to.
  
  
negative.code:     fullRepairInterval = mkOption {
        type = types.nullOr types.str;
        default = "3w";
        example = null;
        description = ''
          Set the interval how often full repairs are run, i.e.
          <literal>nodetool repair --full</literal> is executed. See
  