private Function<LaunchJwt, Mono<NamesRoleResponse>> namesRoleService = (launchJwt) -> {
        NamesRoleService namesRoleService = launchJwt.getNamesRoleService();
        if (Objects.nonNull(namesRoleService) && StringUtils.isNotBlank(namesRoleService.getContextMembershipsUrl())) {
            String contextUrl = namesRoleService.getContextMembershipsUrl();
            return configurationClient.getPlatformAccessToken(constructAuthInfo(launchJwt))
                .flatMap(oAuth2AccessToken -> namesAndRolesClient.getNamesAndRolesInfo(contextUrl, oAuth2AccessToken.getValue()));
        }
        return Mono.empty();
    };

    private Function<LaunchJwt, Mono<NamesRoleResponse>> contextClaimService = (launchJwt) -> {
        if (Objects.nonNull(launchJwt.getContext())) {
            NamesRoleResponse namesRoleResponse = new NamesRoleResponse();
            namesRoleResponse.setMembers(new ArrayList<Member>());
            namesRoleResponse.setContext(constructCourseContext(launchJwt));
            return Mono.just(namesRoleResponse);
        }
        return Mono.empty();
    };
    
    // if teacher
    private List<Function<LaunchJwt, Mono<NamesRoleResponse>>> namesRolesResponseSources = List.of(namesRoleService, contextClaimService);
    // if student
    // private List<Function<LaunchJwt, Mono<NamesRoleResponse>>> namesRolesResponseSources = List.of(contextClaimService, namesRoleService);