code: public DescribeRetentionConfigurationsRequest withRetentionConfigurationNames(String... retentionConfigurationNames) {
          if (this.retentionConfigurationNames == null) {
              setRetentionConfigurationNames(new com.amazonaws.internal.SdkInternalList<String>(retentionConfigurationNames.length));
          }
          for (String ele : retentionConfigurationNames) {
              this.retentionConfigurationNames.add(ele);
          }
          return this;
      }
docs: <p>
  A list of names of retention configurations for which you want details. If you do not specify a name, AWS Config
  returns details for all the retention configurations for that account.
  </p>
  <note>
  <p>
  Currently, AWS Config supports only one retention configuration per region in your account.
  </p>
  </note>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRetentionConfigurationNames(java.util.Collection)} or
  {@link #withRetentionConfigurationNames(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param retentionConfigurationNames
  A list of names of retention configurations for which you want details. If you do not specify a name, AWS
  Config returns details for all the retention configurations for that account.</p> <note>
  <p>
  Currently, AWS Config supports only one retention configuration per region in your account.
  </p>
  @return Returns a reference to this object so that method calls can be chained together.