code: public GetResourceConfigHistoryResult withConfigurationItems(ConfigurationItem... configurationItems) {
          if (this.configurationItems == null) {
              setConfigurationItems(new com.amazonaws.internal.SdkInternalList<ConfigurationItem>(configurationItems.length));
          }
          for (ConfigurationItem ele : configurationItems) {
              this.configurationItems.add(ele);
          }
          return this;
      }
docs: <p>
  A list that contains the configuration history of one or more resources.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setConfigurationItems(java.util.Collection)} or {@link #withConfigurationItems(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param configurationItems
  A list that contains the configuration history of one or more resources.
  @return Returns a reference to this object so that method calls can be chained together.