code: public java.util.List<String> getAWSAccountIds() {
          if (aWSAccountIds == null) {
              aWSAccountIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return aWSAccountIds;
      }
docs: <p>
  The AWS account IDs of the users (principals) who will be given access to the specified actions. The users must
  have AWS accounts, but do not need to be signed up for this service.
  </p>
  
  @return The AWS account IDs of the users (principals) who will be given access to the specified actions. The
  users must have AWS accounts, but do not need to be signed up for this service.