property('output')
                        .forbiddenAt(reserved)
                        .includeLink()
                }))
                verifyAll(receivedProblem(index as Integer)) {
                    fqid == 'validation:property-validation:cannot-write-to-reserved-location'

        def result = GradleRunner.create()
            .withProjectDir(testProjectDir)
            .withArguments('verifyUrl')
            .withPluginClasspath()
            .build()

        then:
        result.output.contains("Successfully resolved URL 'https://www.google.com/'")
        result.task(":verifyUrl").outcome == SUCCESS
    }

# tag::cli[]
# gradle verifyUrl --quiet --url=http://www.google.com/
# end::cli[]
executable: gradle
args: "verifyUrl --url=http://www.google.com/"
flags: --quiet

        def result = GradleRunner.create()
            .withProjectDir(testProjectDir)
            .withArguments('verifyUrl')
            .withPluginClasspath()
            .build()

        then:
        result.output.contains("Successfully resolved URL 'https://www.google.com/'")
        result.task(":verifyUrl").outcome == SUCCESS
    }

    @Override
    public void apply(Project project) {
        UrlVerifierExtension extension = project.getExtensions().create("verification", UrlVerifierExtension.class);
        UrlVerify verifyUrlTask = project.getTasks().create("verifyUrl", UrlVerify.class);
        verifyUrlTask.getUrl().set(extension.getUrl());
    }

// tag::task[]
tasks.register<UrlVerify>("verifyUrl")

    @Override
    public void apply(Project project) {
        UrlVerifierExtension extension = project.getExtensions().create("verification", UrlVerifierExtension.class);
        UrlVerify verifyUrlTask = project.getTasks().create("verifyUrl", UrlVerify.class);
        verifyUrlTask.getUrl().set(extension.getUrl());
    }

// tag::task[]
tasks.register('verifyUrl', UrlVerify)

<2> Configures the URL to be verified through the exposed extension

Executing the `verifyUrl` task renders a success message if the HTTP GET call to the configured URL returns with a 200 response code:

[[verify-url-cmd-output]]
[source,shell]
----
$ gradle verifyUrl

include::{snippetsPath}/developingPlugins/testingPlugins/tests/verifyUrl.out[]
----

- The option uses a double-dash as a prefix, e.g., `--url`.
A single dash does not qualify as valid syntax for a task option.
- The option argument follows directly after the task declaration, e.g., `verifyUrl --url=http://www.google.com/`.
- Multiple task options can be declared in any order on the command line following the task name.