How to access rails application routes in rails models

With the newer version of rails, application itself is an engine which is the initialized format of abstract class Rails::Application and to access routes of any (host) engine the code is

SomeRailsApplicationName::Application.routes.url_helpers.named_route_path
SomeRailsApplicationName::Application.routes.url_helpers.named_route_path(parameter: 'something')

and for a (mountable) engine the code is

SomeMountableEngineName::Engine.routes.url_helpers.named_route_path
SomeMountableEngineName::Engine.routes.url_helpers.named_route_path(parameter: 'something'

Example:

rails console > Helloworld::Application.routes.url_helpers.about_path
 => "/about"

rails console > BambooUser::Engine.routes.url_helpers.login_path
 => "/users/login"