}

    /**
     * Check if the given file is "bad": we should only use the release note from the master branch.
     * This means that every line in the merge commit version should be either:
     * - Only exists on `master`.
     * - Exists on `master` and `releaseX`.
     * If any line is only present on `releaseX` version, then it's a bad file.
     * Also, we ignore empty lines.
     */

            .forwardOutput()
    }

    private void assertNoDeadLinks() {
        assert linkErrors.exists()
        assert linkErrors.text.stripTrailing().endsWith('All clear!')
    }

    private void assertFoundDeadLinks(Collection<DeadLink> deadLinks) {
        assert linkErrors.exists()

        def lines = linkErrors.readLines()
        deadLinks.each { deadLink ->