# tag::cli[]
# gradle --quiet printProperties
# end::cli[]
executable: gradle
args: printProperties
flags: --quiet

                outputs.dir("output-dir")
                outputs.dirs("output-dir-1", "output-dir-2")
            }
        """ << printProperties("myTask")
        when:
        run "printProperties"
        then:
        output.contains """
            Input file property '\$1'
            Input file property '\$2'
            Input file property '\$3'

    main {
        extra["purpose"] = "production"
    }
    test {
        extra["purpose"] = "test"
    }
    create("plugin") {
        extra["purpose"] = "production"
    }
}

tasks.register("printProperties") {
    val springVersion = springVersion
    val emailNotification = emailNotification
    val productionSourceSets = provider {
        sourceSets.matching { it.extra["purpose"] == "production" }.map { it.name }
    }

sourceSets {
    main {
        purpose = "production"
    }
    test {
        purpose = "test"
    }
    plugin {
        purpose = "production"
    }
}

tasks.register('printProperties') {
    def springVersion = springVersion
    def emailNotification = emailNotification
    def productionSourceSets = provider {
        sourceSets.matching { it.purpose == "production" }.collect { it.name }
    }

include::sample[dir="snippets/tutorial/extraProperties/kotlin",files="build.gradle.kts[tags=extraProperties]"]
include::sample[dir="snippets/tutorial/extraProperties/groovy",files="build.gradle[tags=extraProperties]"]

----
$ gradle -q printProperties
include::{snippetsPath}/tutorial/extraProperties/tests/extraProperties.out[]
----
====

[.multi-language-text.lang-kotlin]