@Initializer(after=EXTENSIONS_AUGMENTED) public static void onLoaded() { //Creates default tool installation if needed. Uses "git" or migrates data from previous versions Jenkins jenkinsInstance = Jenkins.getInstance(); DescriptorImpl descriptor = (DescriptorImpl) jenkinsInstance.getDescriptor(GitTool.class); GitTool[] installations = getInstallations(descriptor); if (installations != null && installations.length > 0) { //No need to initialize if there's already something return; } String defaultGitExe = isWindows() ? "git.exe" : "git"; GitTool tool = new GitTool(DEFAULT, defaultGitExe, Collections.<ToolProperty<?>>emptyList()); descriptor.setInstallations(new GitTool[] { tool }); descriptor.save(); }