    # File lib/active_support/memoizable.rb, line 29
          def prime_cache(*syms)
            syms.each do |sym|
              methods.each do |m|
                if m.to_s =~ /^_unmemoized_(#{sym})/
                  if method(m).arity == 0
                    __send__($1)
                  else
                    ivar = ActiveSupport::Memoizable.memoized_ivar_for($1)
                    instance_variable_set(ivar, {})
                  end
                end
              end
            end
          end