gitlab-org--gitlab-foss/app/controllers/projects/tree_controller.rb

# Controller for viewing a repository's file structure
class Projects::TreeController < Projects::BaseTreeController
  def show
    return not_found! if tree.entries.empty?

    respond_to do |format|
      format.html
      # Disable cache so browser history works
      format.js { no_cache_headers }
    end
  end
end