lib/ui_bibz/ui/core/boxes/card.rb
def header content = nil, options = nil, html_options = nil, &block
      options, content = inherit_options(content, options, block)
      if is_tap(content, options)
        @header = UiBibz::Ui::Core::Boxes::Components::CardHeader.new(content, options, html_options).tap(&block).render
      else
        @header = UiBibz::Ui::Core::Boxes::Components::CardHeader.new(content, options, html_options, &block).render
      end
    end
def header content = nil, options = nil, html_options = nil, &block
      options, content = inherit_options(content, options, block)
      if is_tap(content, options)
        @header = UiBibz::Ui::Core::Boxes::Components::CardHeader.new(content, options, html_options).tap(&block).render
      else
        @header = UiBibz::Ui::Core::Boxes::Components::CardHeader.new(content, options, html_options, &block).render
      end
    end
See UiBibz::Ui::Core::Component.initialize
 Add Header which is a component