Arrays.asList(context.extraInterpolationSource(), context.userProperties, context.systemProperties));

        // core extensions
        context.extensions = readCoreExtensionsDescriptor(context);

        return getInvokerRequest(context);
    }

    protected abstract R getInvokerRequest(LocalContext context);

        extensions.addAll(readCoreExtensionsDescriptor(installationExtensionsFile));

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