code: public void out2in(Object from, String from_out, Object... tos) {
          for (Object co : tos) {
              out2in(from, from_out, co, from_out);
          }
      }
docs: Connects field1 of cmd1 with the same named fields in cmds
  @param from component1
  @param from_out field
  @param tos other components