local configuration = {  ['templatestyles'] = 'Module:Navbar/styles.css',  ['box_text'] = 'This box: ', -- default text box when not plain or mini  ['title_namespace'] = 'Template', -- namespace to default to for title  ['invalid_title'] = 'Invalid title ',  ['classes'] = { -- set a line to nil if you don't want it  ['navbar'] = 'navbar',  ['plainlinks'] = 'plainlinks', -- plainlinks  ['horizontal_list'] = 'hlist', -- horizontal list class  ['mini'] = 'navbar-mini', -- class indicating small links in the navbar  ['this_box'] = 'navbar-boxtext',  ['brackets'] = 'navbar-brackets',  -- 'collapsible' is the key for a class to indicate the navbar is  -- setting up the collapsible element in addition to the normal  -- navbar.  ['collapsible'] = 'navbar-collapse',  ['collapsible_title_mini'] = 'navbar-ct-mini',  ['collapsible_title_full'] = 'navbar-ct-full'  } }  return configuration