def determine_resolver(params)
      if params[:resolver]
        Djatoka::Resolver.new(params[:resolver])
      elsif Djatoka.resolver
        Djatoka.resolver
      else
        nil
      end
    end
def determine_resolver(params)
      if params[:resolver]
        Djatoka::Resolver.new(params[:resolver])
      elsif Djatoka.resolver
        Djatoka.resolver
      else
        nil
      end
    end
Uses the <tt>:resolver</tt> parameter first and then the value stored in
 Djatoka.resolver second.