this.branch = branch;
            this.gradleProjectPath = gradleProjectPath;
        }
    }

    public BwcVersions(List<String> versionLines) {
        this(versionLines, Version.fromString(VersionProperties.getElasticsearch()));
    }

    protected BwcVersions(List<String> versionLines, Version currentVersionProperty) {
        this(
            versionLines.stream()

        List<String> actualNames = new ArrayList<>();
        bwcVersions.forPreviousUnreleased(unreleasedVersion -> actualNames.add(unreleasedVersion.gradleProjectPath));
        assertEquals(expectedNAmes, actualNames);
    }

    private void assertUnreleasedBranchNames(List<String> expectedBranches, BwcVersions bwcVersions) {

     * logic in VersionUtils.java. */
    private static BwcVersions resolveBwcVersions(File root) {
        File versionsFile = new File(root, DEFAULT_VERSION_JAVA_FILE_PATH);
        try {
            List<String> versionLines = IOUtils.readLines(new FileInputStream(versionsFile), "UTF-8");
            return new BwcVersions(versionLines);
        } catch (IOException e) {

These are automatically checked out and built from source.
See link:./build-tools-internal/src/main/java/org/elasticsearch/gradle/BwcVersions.java[BwcVersions]
and link:./distribution/bwc/build.gradle[distribution/bwc/build.gradle]
for more information.

When running `./gradlew check`, minimal bwc checks are also run against compatible versions that are not yet released.

            .forPreviousUnreleased(
                (BwcVersions.UnreleasedVersionInfo unreleasedVersion) -> {
                    configureBwcProject(project.project(unreleasedVersion.gradleProjectPath), unreleasedVersion, bwcTaskThrottleProvider);
                }
            );
    }

    private void configureBwcProject(
        Project project,
        BwcVersions.UnreleasedVersionInfo versionInfo,