 'client_secret_basic'}">
                            CLIENT_SECRET_BASIC
                        </option>
                        <option value="client_secret_post"
                                th:selected="${oauth2Client.clientAuthenticationMethods[0].clientAuthenticationMethod eq 'client_secret_post'}">
                            CLIENT_SECRET_POST
                        </option>
                        <option value="client_secret_jwt"
                                th:selected="${oauth2Client.c