docs: public ModifyDBClusterSnapshotAttributeRequest withValuesToAdd(String... valuesToAdd) {
          if (this.valuesToAdd == null) {
              setValuesToAdd(new com.amazonaws.internal.SdkInternalList<String>(valuesToAdd.length));
          }
          for (String ele : valuesToAdd) {
              this.valuesToAdd.add(ele);
          }
          return this;
      }