docs: public ReshardingConfiguration withPreferredAvailabilityZones(String... preferredAvailabilityZones) {
          if (this.preferredAvailabilityZones == null) {
              setPreferredAvailabilityZones(new com.amazonaws.internal.SdkInternalList<String>(preferredAvailabilityZones.length));
          }
          for (String ele : preferredAvailabilityZones) {
              this.preferredAvailabilityZones.add(ele);
          }
          return this;
      }