module Roda::RodaPlugins::Base::RequestMethods

def if_match(args)

the match arguments doesn't match, does nothing.
returns the rack response when the block returns. If any of
If all of the arguments match, yields to the match block and 
def if_match(args)
  path = @remaining_path
  # For every block, we make sure to reset captures so that
  # nesting matchers won't mess with each other's captures.
  captures = @captures.clear
  if match_all(args)
    block_result(yield(*captures))
    throw :halt, response.finish
  else
    @remaining_path = path
    false
  end
end