final File markerFile = new File(localZipFile.getParentFile(), localZipFile.getName() + ".ok");
                if (distDir.isDirectory() && markerFile.isFile()) {
                    InstallCheck installCheck = verifyDistributionRoot(distDir, distDir.getAbsolutePath());
                    if (installCheck.isVerified()) {
                        return installCheck.gradleHome;
                    }