lib/ui_bibz/ui/core/lists/components/list.rb
def header content = nil, options = nil, html_options = nil, &block
      @header = UiBibz::Ui::Core::Lists::Components::ListHeader.new content, options, html_options, &block
    end
def header content = nil, options = nil, html_options = nil, &block
      @header = UiBibz::Ui::Core::Lists::Components::ListHeader.new content, options, html_options, &block
    end
Add header which is a component