Since #2525, you're now unable to generate static API documentation:

$ rake apipie:static
rake aborted!
wrong number of arguments (0 for 1)
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/apipie/dsl_definition.rb:321:in `included'
/home/dcleal/code/foreman/foreman/app/controllers/concerns/api/v2/taxonomies_controller.rb:4:in `<module:TaxonomiesController>'
/home/dcleal/code/foreman/foreman/app/controllers/concerns/api/v2/taxonomies_controller.rb:1:in `<top (required)>'
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/tasks/apipie.rake:127:in `load'
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/tasks/apipie.rake:127:in `block in with_loaded_documentation'
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/tasks/apipie.rake:127:in `each'
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/tasks/apipie.rake:127:in `with_loaded_documentation'
/home/dcleal/.rvm/gems/ruby-2.0.0-p0@foreman/gems/apipie-rails-0.0.21/lib/tasks/apipie.rake:20:in `block (2 levels) in <top (required)>'