// 1. It's a merge commit.
        // 2. One of its parent commits is from master only.
        // 3. Another parent commit is not from master but from release branch.
        // Otherwise, skip this commit.
        List<String> p1Branches = branchesOf(parentCommits.get(0));
        List<String> p2Branches = branchesOf(parentCommits.get(1));

        System.out.println(commit + " parents: " + parentCommits);

fun Directory.parentOrRoot(): Directory = if (this.file("version.txt").asFile.exists()) {
    this
} else {
    val parent = dir("..")
    when {
        parent.file("version.txt").asFile.exists() -> parent
        this == parent -> error("Cannot find 'version.txt' file in root of repository")
        else -> parent.parentOrRoot()
    }
}


fun Project.releasedVersionsFile() = repoRoot().file("released-versions.json")

    <groupId>Gradle_Check</groupId>
    <artifactId>Gradle_Check_dsl</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.jetbrains.teamcity</groupId>
        <artifactId>configs-dsl-kotlin-parent</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <repositories>
        <repository>
            <id>jetbrains-all</id>

index.field.timestamp=timestamp
# Field name for label in the index.
index.field.label=label
# Field name for MIME type in the index.
index.field.mimetype=mimetype
# Field name for parent ID in the index.
index.field.parent_id=parent_id
# Field name for important content in the index.
index.field.important_content=important_content
# Field name for content in the index.
index.field.content=content

     */
    String getIndexFieldMimetype();

    /**
     * Get the value for the key 'index.field.parent_id'. <br>
     * The value is, e.g. parent_id <br>
     * comment: Field name for parent ID in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldParentId();

    /**