def METHOD_NAME(parser, token):
    """
    Render a link as a primary button.
    Examples::
        Url as string:
        .. code-block:: htmldjango
            {% load cradmin_email_tags %}
            {% cradmin_email_primary_buttonlink "http://example.com" %}
                A primary button link
            {% end_cradmin_email_primary_buttonlink %}
        Url as context variable:
        .. code-block:: htmldjango
            {% load cradmin_email_tags %}
            {% cradmin_email_primary_buttonlink someurl %}
                A primary button link
            {% end_cradmin_email_primary_buttonlink %}
    """
    return _cradmin_email_buttonlink(parser, token,
                                     linkstyle_context_variable='primary_button_link_style')