# File lib/parser/builders/default.rb, line 707
    def objc_kwarg(kwname_t, assoc_t, name_t)
      kwname_l = loc(kwname_t)
      if assoc_t.nil? # a: b, not a => b
        kwname_l   = kwname_l.resize(kwname_l.size - 1)
        operator_l = kwname_l.end.resize(1)
      else
        operator_l = loc(assoc_t)
      end

      n(:objc_kwarg, [ value(kwname_t).to_sym, value(name_t).to_sym ],
        Source::Map::ObjcKwarg.new(kwname_l, operator_l, loc(name_t),
                                   kwname_l.join(loc(name_t))))
    end