public Class PreferencesFormBuilder

form()
        // A titled section. Its contents are the chain inside the lambda, so the grouping
        // is visible in the source; the trailing lambda addresses the section as a whole.
        .section("HTTP Server", httpServer -> httpServer

                // A checkbox with a value field beside it, enabled while the box is ticked.
                // Convenience sugar for checkbox(text, enabled, box -> box.attachField(...).
                // The lambda addresses that field, not the checkbox.
                .checkWithField("Enable HTTP Server on port",
                        viewModel.enableHttpServerProperty(),
                        viewModel.httpPortProperty(),
                        port -> port.validate(viewModel.httpPortValidationStatus())
                                    .help(HelpFile.REMOTE))

                // A group of related elements, can be disabled as one.
                .group(expert -> expert
                        .stringField("API base URL", viewModel.apiBaseUrlProperty()),
                        expertGroup -> expertGroup.disableWhen(viewModel.disableExpertSettingsProperty())),

                // Documentation for the section as a whole: a help button beside its heading.
                httpServerSection -> httpServerSection.help("https://docs.jabref.org/advanced/remote"))
        .section("Another section", section -> section
                ...)
        .build();