anchor.diff:  
   %% Start streaming in list keys
   process(#rpblistkeysreq{type = Type, bucket=B,timeout=T}=Req, #state{client=C} = State) ->
  -    %% stream_list_keys results will be processed by process_stream/3
  -    case check_bucket_type(Type) of
  -        {ok, GoodType} ->
  -            Bucket = maybe_create_bucket_type(GoodType, B),
  -	    {ok, ReqId} = C:stream_list_keys(Bucket, T),
  -	    {reply, {stream, ReqId}, State#state{req = Req, req_ctx = ReqId}};
  -        error ->
  -            {error, {format, "No bucket-type named '~s'", [Type]}, State}
  +    case riak_core_util:job_class_enabled(list_keys) of
  +        true ->
  +            %% stream_list_keys results will be processed by process_stream/3
  +            case check_bucket_type(Type) of
  +                {ok, GoodType} ->
  +                    Bucket = maybe_create_bucket_type(GoodType, B),
  +                    {ok, ReqId} = C:stream_list_keys(Bucket, T),
  +                    {reply, {stream, ReqId}, State#state{req = Req, req_ctx = ReqId}};
  +                error ->
  +                    {error, {format, "No bucket-type named '~s'", [Type]}, State}
  +            end;
  +        _ ->
  +            {error, "Operation 'list_keys' is not enabled", State}
       end.
   
   %% @doc process_stream/3 callback. Handles streaming keys messages and
  
positive.code: 
  %% @doc process/2 callback. Handles an incoming request message.
  process(#rpblistbucketsreq{type = Type, timeout=T, stream=S}=Req, State) ->
      case check_bucket_type(Type) of
          {ok, GoodType} ->
              do_list_buckets(GoodType, T, S, Req, State);
          error ->
              {error, {format, "No bucket-type named '~s'", [Type]}, State}
      end;
  
  %% this should remain for backwards compatibility
  
negative.code: %% -------------------------------------------------------------------
  %%
  %% Copyright (c) 2012-2016 Basho Technologies, Inc.
  %%
  %% This file is provided to you under the Apache License,
  %% Version 2.0 (the "License"); you may not use this file
  