docs: public BatchGetTracesResult withUnprocessedTraceIds(String... unprocessedTraceIds) {
          if (this.unprocessedTraceIds == null) {
              setUnprocessedTraceIds(new java.util.ArrayList<String>(unprocessedTraceIds.length));
          }
          for (String ele : unprocessedTraceIds) {
              this.unprocessedTraceIds.add(ele);
          }
          return this;
      }