this.factories = factories;
        this.logger = LoggerFactory.getLogger(DefaultToolchainManager.class);
    }

    /**
     * Ctor needed for UT.
     */
    DefaultToolchainManager(Map<String, ToolchainFactory> factories, Logger logger) {
        this.factories = factories;
        this.logger = requireNonNull(logger);
    }

    @Override