File tryInstall(JavaToolchainSpec spec) {
                installed = true
                new File("/path/12")
            }
        }
        def queryService = createQueryService(registry, newJvmMetadataDetector(), provisionService)

        when:
        def filter = createSpec()
        filter.languageVersion.set(JavaLanguageVersion.of(12))
        def toolchain = queryService.findMatchingToolchain(filter)