Class<?> getArgumentType();

    Set<String> getAvailableValues();

    String getDescription();

    /**
     * An option will be considered clashing (and hence can be ignored/reported)
     * if it has the same name as a previous option.
     */
    boolean isClashing();

    /**
     * @throws TypeConversionException On failure to convert the given values to the required types.
     */

        expect:
        userInputHandler.selectOption('Select count', [1, 2, 3], 2) == 2
    }

    def "returns first option when no default"() {
        expect:
        userInputHandler.choice('Select count', [1, 2, 3])
            .ask() == 1
    }

    def "returns default option for choice"() {
        expect:
        userInputHandler.choice('Select count', [1, 2, 3])
            .defaultOption(2)

}

// Unique returns whether the index is unique or not.
func (idx Index) Unique() (unique bool, ok bool) {
	return idx.UniqueValue.Bool, idx.UniqueValue.Valid
}

// Option return the optional attribute of the index
func (idx Index) Option() string {
	return idx.OptionValue

* What went wrong:
Execution failed for task ':taskX'.
> java.lang.RuntimeException (no error message)

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

If the `--incubating` option is provided, Gradle will generate build scripts which may use the latest versions of APIs, which are marked `@Incubating` and remain <<feature_lifecycle.adoc#feature_lifecycle,subject to change>>. To disable this behavior, use `--no-incubating`.

If an exception implements this interface, Gradle will not display the `--stacktrace` option.

Another more targeted interface is `CompilationFailedIndicator`.
This interface is used to indicate that the exception is caused by a compilation failure. 

                        report(type: 'ide') {
                            option(name: 'writeToStandardOut', value: true)
                        }
                    } else if (r.name.get() == 'html') {
                        report(type: 'sortable') {
                            option(name: 'outputFile', value: r.outputLocation.asFile.get())
                        }
                    } else {

                case EXPLICIT_TRUE:
                    return Option.Value.value(true);
                case EXPLICIT_FALSE:
                    return Option.Value.value(false);
                case IMPLICIT_TRUE:
                    return Option.Value.defaultValue(true);
                case IMPLICIT_FALSE:
                    return Option.Value.defaultValue(false);
                default:

done
executing task ':broken' ...
FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':broken'.
> broken

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

    public static final String DEBUG = "Run with --debug option to get more log output."
    public static final String SCAN = "Run with --scan to get full insights."
    public static final String GET_HELP = "Get more help at https://help.gradle.org."
    public static final String STACKTRACE_MESSAGE = "Run with --stacktrace option to get the stack trace."