# File lib/parser/builders/default.rb, line 816
    def attr_asgn(receiver, dot_t, selector_t)
      method_name = (value(selector_t) + '=').to_sym
      type = call_type_for_dot(dot_t)

      # Incomplete method call.
      n(type, [ receiver, method_name ],
        send_map(receiver, dot_t, selector_t))
    end