FREST.defn(
    strong: true,
    arg_types: {
      tags: {
        '/relation_type' => 'tag'
      }
    },
    tags: ['presentater'],
    result_type: 'html'
) do
  'Timeline goes here'
end

=begin
tag:    'presenter',
result: 'html',
source: first_result,
limit:  1
=end
