# File lib/parser/builders/default.rb, line 807
    def objc_varargs(pair, rest_of_varargs)
      value, first_vararg = *pair
      vararg_array = array(nil, [ first_vararg, *rest_of_varargs ], nil).
        updated(:objc_varargs)
      pair.updated(nil, [ value, vararg_array ],
        { :location => pair.loc.with_expression(
              pair.loc.expression.join(vararg_array.loc.expression)) })
    end