anchor.diff:  <%-
     partial                 = "inline_fields"
     attr_string             = attr.to_s
  -  nested_class            = "#{attr_string.parameterize}-nested".gsub("_", "-")
     header                  = attr_string.humanize
     singular_name           = attr_string.singularize
     singular_name_humanized = singular_name.humanize
  
positive.code: 
    <h2><%= header %></h2>
  
    <div class="<%= nested_class %> nested-wrapper">
  
      <%- if is_orderable -%>
        <div class="inline-actions">
  
negative.code:       </div>
      <%- end -%>
  
      <div class="nested-container">
        <%= f.simple_fields_for attr, records do |record| %>
          <%= render partial, { f: record }.merge(locals_to_be_passed) %>
        <%- end -%>
  