<%- if @heartbeat -%>
{heartbeat, <%=@heartbeat%>},
<% end -%>
- {loopback_users, [<%= @loopback_users.map { |u| "<<\"#{u}\">>" }.join(', ') %>]},
<% if @auth_backends -%>
{auth_backends, [<%= @auth_backends.map { |v| "#{v}" }.join(', ') %>]},
<% elsif @ldap_auth -%>