Hi, I'm developing a plugin for OpenProject. Here are my main page at administration:

I want to add a breadcrumb on the top of it, like so:

I have been inspected the code and seen that it used the :view_layouts_base_breadcrumb hook on layout/base.html.erb to render that breadcrumb. 

How can I use that hook so that my page displays like Administration > Service Pack

Thanks for help!