 It seems that --elasticsearch-version is not use.
config = get_domain_config(domain_name)
    return jsonify(config)
@app.route('%s/es/domain/<domain_name>' % API_PREFIX, methods=['DELETE'])
def delete_domain(domain_name):
    if domain_name not in ES_DOMAINS:
        return error_response(error_type='ResourceNotFoundException')
    result = get_domain_status(domain_name, deleted=True)
    ES_DOMAINS.pop(domain_name)
    if not ES_DOMAINS:
        cleanup_elasticsearch_instance()
    
    event_publisher.fire_event(event_publisher.EVENT_ES_DELETE_DOMAIN,
        payload={'n': event_publisher.get_hash(domain_name)})
    persistence.record('es', request=request)
    return jsonify(result)
@app.route('%s/es/compatibleVersions' % API_PREFIX, methods=['GET'])
def get_compatible_versions():
    result = [{
        'SourceVersion': '6.5',
        'TargetVersions': ['6.7', '6.8']
    }, {
        'SourceVersion': '6.7',
        'TargetVersions': ['6.8']
    }, {
        'SourceVersion': '6.8',
        'TargetVersions': ['7.1']
    }]
    return jsonify({'CompatibleElasticsearchVersions': result})
@app.route('%s/tags' % API_PREFIX, methods=['GET', 'POST'])
def add_list_tags():