} catch (IOException e) {
            throw new UncheckedIOException(e);
        }
        throw new GradleException("Documentation assertion failed: found invalid internal links. See " + new org.gradle.internal.logging.ConsoleRenderer().asClickableFileUrl(reportFile));
    }

    private void writeHeader(PrintWriter fw) {
        fw.println("# Valid links are:");
        fw.println("# * Inside the same file: <<(#)section-name(,text)>>");