docs: public DescribeDirectoriesRequest withDirectoryIds(String... directoryIds) {
          if (this.directoryIds == null) {
              setDirectoryIds(new com.amazonaws.internal.SdkInternalList<String>(directoryIds.length));
          }
          for (String ele : directoryIds) {
              this.directoryIds.add(ele);
          }
          return this;
      }