code: public UpdatePullRequestParams attachmentIds(List<Long> attachmentIds) {
          for (Long attachmentId : attachmentIds) {
              parameters.add(new NameValuePair("attachmentId[]", attachmentId.toString()));
          }
          return this;
      }
docs: Sets the pull request attachment files.
  
  @param attachmentIds the attachment file identifiers
  @return UpdatePullRequestParams instance