{{ $image_path := .image_path }}
{{ $alt := .alt }}
{{ $title := .title }}
{{ $caption := .caption }}
{{ $class := .class }}
{{ if $caption}}
<figure class="{{ $class }}">
  <img src="{{ $image_path }}" alt="{{ $alt }}" title="{{ $title }}">
  <figcaption>{{ $caption }}</figcaption>
</figure> 
{{ else }}
  <img src="{{ $image_path }}" alt="{{ $alt }}" title="{{ $title }}" class="{{ $class }}">
{{ end }}