Session session;
        Source installationToolchainsSource;
        Source userToolchainsSource;

        public ToolchainsBuilderRequestBuilder session(Session session) {
            this.session = session;
            return this;
        }

        public ToolchainsBuilderRequestBuilder installationToolchainsSource(Source installationToolchainsSource) {

                                    }
                                }
                                return null;
                            }))
                    .installationToolchainsSource(convert(request.getGlobalToolchainsSource()))
                    .userToolchainsSource(convert(request.getUserToolchainsSource()))
                    .build());

        ToolchainsBuilderRequest toolchainsRequest = ToolchainsBuilderRequest.builder()
                .session(context.session)
                .installationToolchainsSource(
                        installationToolchainsFile != null && Files.isRegularFile(installationToolchainsFile)
                                ? Source.fromPath(installationToolchainsFile)