anchor.diff:  set_app_env(Config, App, Name, Value) ->
       {_, []} = rpc:multicall(?OZ_NODES(Config), application, set_env, [App, Name, Value]),
       ok.
  -
   
   
   %%--------------------------------------------------------------------
  
positive.code:             end
          end, Indices)}
      end),
      test_utils:mock_expect(Nodes, PluginName, create_index, fun(_,_,_) -> ok end),
      test_utils:mock_expect(Nodes, PluginName, delete_index, fun(_,_) -> ok end),
      test_utils:mock_expect(Nodes, PluginName, query_index, fun(_,_,_) -> {ok, ?HARVESTER_MOCKED_QUERY_DATA_MAP} end),
      test_utils:mock_expect(Nodes, PluginName, query_validator, fun() -> ?HARVESTER_PLUGIN:query_validator() end).
  
  
  
negative.code: %%--------------------------------------------------------------------
  overwrite_compatibility_registry(TestConfig, Registry) ->
      {ok, RegistryPath} = call_oz(TestConfig, application, get_env, [ctool, compatibility_registry_path]),
      {ok, DefaultRegistryPath} = call_oz(TestConfig, application, get_env, [ctool, default_compatibility_registry]),
      rpc:multicall(?OZ_NODES(TestConfig), file, write_file, [RegistryPath, json_utils:encode(Registry)]),
      rpc:multicall(?OZ_NODES(TestConfig), file, write_file, [DefaultRegistryPath, json_utils:encode(Registry)]),
      rpc:multicall(?OZ_NODES(TestConfig), compatibility, clear_registry_cache, []),
      ok.
  
  