docs: @JRubyMethod(name = "type_id=")
      public static IRubyObject set_type_id(IRubyObject self, IRubyObject type_id) {
          org.yecht.Node node = (org.yecht.Node)self.dataGetStructChecked();
          if(!type_id.isNil()) {
              node.type_id = type_id.convertToString().toString();
          }
          ((RubyObject)self).fastSetInstanceVariable("@type_id", type_id);
          return type_id;
      }