railties/lib/rails/generators/rails/controller/templates/controller.rb.tt
<% module_namespacing do -%>
class <%= class_name %>Controller < <%= parent_class_name.classify %>
<% actions.each do |action| -%>
def <%= action %>
end
<%= "\n" unless action == actions.last -%>
<% end -%>
end
<% end -%>