Methods
U
Instance Public methods
use_renderer(*args)
Alias for: use_renderers
use_renderers(*args)
Also aliased as: use_renderer

Source: show | on GitHub 

# File actionpack/lib/action_controller/metal/renderers.rb, line 24
def use_renderers(*args)
  renderers = _renderers + args
  self._renderers = renderers.freeze
end