code: @GET
      @Produces(MediaType.APPLICATION_JSON)
      @Path("/{gavc}" + ServerAPI.SET_DO_NOT_USE)
      public Response getDoNotUse(@PathParam("gavc") final String gavc){
          if(LOG.isInfoEnabled()) {
              LOG.info(String.format("Got a get doNotUse artifact request [%s]", gavc));
          }
  
          final DbArtifact artifact = getArtifactHandler().getArtifact(gavc);
  
          return Response.ok(artifact.getDoNotUse()).build();
      }
docs: Return true if the targeted artifact is flagged with "DO_NOT_USE".
  This method is call via GET <grapes_url>/artifact/<gavc>/donotuse
  
  @param gavc String
  @return Response