// Relying on the layout of the toolchain distribution: <JAVA HOME>/bin/<executable>
        return resolveExecutable(executable).getParentFile().getParentFile();
    }


    public static void validateExecutable(@Nullable String executable, String executableDescription, File referenceFile, String referenceDescription) {
        if (executable == null) {
            return;
        }

    private void validateExecutableMatchesToolchain() {
        File toolchainExecutable = getJavadocTool().get().getExecutablePath().getAsFile();
        String customExecutable = getExecutable();
        JavaExecutableUtils.validateExecutable(
                customExecutable, "Toolchain from `executable` property",
                toolchainExecutable, "toolchain from `javadocTool` property");
    }

    private boolean isModule() {

        File toolchainExecutable = getJavaLauncher().get().getExecutablePath().getAsFile();
        String customExecutable = getExecutable();
        JavaExecutableUtils.validateExecutable(
            customExecutable, "Toolchain from `executable` property",
            toolchainExecutable, "toolchain from `javaLauncher` property");
    }

    /**
     * {@inheritDoc}
     */

        File toolchainExecutable = getJavaLauncher().get().getExecutablePath().getAsFile();
        String customExecutable = getExecutable();
        JavaExecutableUtils.validateExecutable(
                customExecutable, "Toolchain from `executable` property",
                toolchainExecutable, "toolchain from `javaLauncher` property");
    }