{% use '../CommonAdmin/title.php.twig' %}
{% use '../CommonAdmin/stylesheets.php.twig' %}
{% use '../CommonAdmin/javascripts.php.twig' %}
{% use '../CommonAdmin/tabs.php.twig' %}

{{ echo_extends( builder.getBaseAdminTemplate ) }}

{{ echo_block("stylesheets") }}
    {{- block('complementary_stylesheets') -}}
{{ echo_endblock() }}

{{ echo_block("javascripts") }}
    {{- block('complementary_javascripts') -}}
    {{- block('object_actions_script') -}}
{{ echo_endblock() }}

{{- block('site_title') -}}

{{ echo_block("body") }}

    {{- block('title') -}}

    <div class="row-fluid">
        {{- block('tabs') }}
        
        {{ echo_include(builder.namespacePrefixForTemplate ~ bundle_name ~ ':' ~ builder.BaseGeneratorName ~ (builder.yamlKey | capitalize) ~ ':form.html.twig') }}
    </div>	
{{ echo_endblock() }}

{% use '../CommonAdmin/title.php.twig' %}
{% use '../CommonAdmin/stylesheets.php.twig' %}
{% use '../CommonAdmin/javascripts.php.twig' %}
{% use '../CommonAdmin/tabs.php.twig' %}

{{ echo_extends( builder.getBaseAdminTemplate ) }}

{{ echo_block("stylesheets") }}
    {{- block('complementary_stylesheets') -}}
{{ echo_endblock() }}

{{ echo_block("javascripts") }}
    {{- block('complementary_javascripts') -}}
{{ echo_endblock() }}

{{- block('site_title') -}}

{{- block('page_title') -}}

{{ echo_block("page_content") }}
    <div class="row">
        {% if tabs|default is not empty %}
            {{- block('tabs') }}
                <div class="tab-content">
        {% endif %}
        {{ echo_include(builder.namespacePrefixForTemplate ~ bundle_name ~ ':' ~ builder.BaseGeneratorName ~ (builder.yamlKey | capitalize) ~ ':form.html.twig') }}
        {% if tabs|default is not empty %}
                </div>
            {{- block('end_tabs') }}
        {% endif %}
    </div>	
{{ echo_endblock() }}

Edit builder template with tabs
Edit builder template with tabs
