docs: public DescribeRetentionConfigurationsResult withRetentionConfigurations(RetentionConfiguration... retentionConfigurations) {
          if (this.retentionConfigurations == null) {
              setRetentionConfigurations(new com.amazonaws.internal.SdkInternalList<RetentionConfiguration>(retentionConfigurations.length));
          }
          for (RetentionConfiguration ele : retentionConfigurations) {
              this.retentionConfigurations.add(ele);
          }
          return this;
      }