code: public String patch_toText(List<Patch> patches) {
          StringBuilder text = new StringBuilder();
          for (Patch aPatch : patches) {
              text.append(aPatch);
          }
          return text.toString();
      }
docs: Take a list of patches and return a textual representation.
  
  @param patches
  List of Patch objects.
  @return Text representation of patches.