}

        // below we use effective properties as both system + user are present
        // core extensions
        try {
            context.extensions = readCoreExtensionsDescriptor(context);
        } catch (Exception e) {
            context.parsingFailed = true;
            parserRequest.logger().error("Error reading core extensions descriptor", e);
        }

        extensions.addAll(readCoreExtensionsDescriptor(installationExtensionsFile));

        String projectExtensionsFile = cliRequest.getUserProperties().getProperty(Constants.MAVEN_PROJECT_EXTENSIONS);
        extensions.addAll(readCoreExtensionsDescriptor(projectExtensionsFile));