tasks.register('performRelease') {
    def isCI = providers.gradleProperty("isCI")
    doLast {
        if (isCI.present) {
            println("Performing release actions")
        } else {
            throw new InvalidUserDataException("Cannot perform release outside of CI")
        }
    }

executable: gradle
args: performRelease
flags: "-PisCI=true --quiet"

tasks.register("performRelease") {
    val isCI = providers.gradleProperty("isCI")
    doLast {
        if (isCI.isPresent) {
            println("Performing release actions")
        } else {
            throw InvalidUserDataException("Cannot perform release outside of CI")
        }
    }

include::sample[dir="snippets/tutorial/configureTaskUsingProjectProperty/kotlin",files="build.gradle.kts[]"]
include::sample[dir="snippets/tutorial/configureTaskUsingProjectProperty/groovy",files="build.gradle[]"]
----
$ gradle performRelease -PisCI=true --quiet
include::{snippetsPath}/tutorial/configureTaskUsingProjectProperty/tests/configureTaskUsingProjectProperty.out[]
----

  <artifactId>maven-it-it0052</artifactId>
  <version>1.0</version>
  <packaging>jar</packaging>

  <name>Maven Integration Test :: it0052</name>
  <description>Test that source attachment doesn't take place when -DperformRelease=true is missing.</description>

  <!-- NOTE: Use stub versions of the core plugins referenced by the build -->
  <build>
    <pluginManagement>
      <plugins>
        <plugin>

        String testPluginArtifactId = "maven-compiler-plugin";

        // this is the plugin we're looking for.
        validPluginCounts.put(testPluginArtifactId, 0);

        // these are injected if -DperformRelease=true
        validPluginCounts.put("maven-deploy-plugin", 0);
        validPluginCounts.put("maven-javadoc-plugin", 0);
        validPluginCounts.put("maven-source-plugin", 0);

        Plugin testPlugin = null;