* that callers don't pass an {@link Entry} by mistake.
   */
  protected V get(K key) {
    return getMap().get(key);
  }

  protected final K k0() {
    return e0().getKey();
  }

  protected final V v0() {
    return e0().getValue();
  }

  protected final K k1() {
    return e1().getKey();
  }

  protected final V v1() {
    return e1().getValue();
  }

public abstract class EsAbstractConditionAggregation {

    protected static final String CA_PROPERTY = "conditionAggregation";

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========

    /** employeeNumber */
    protected String employeeNumber;

    /** employeeType */
    protected String employeeType;

    /** facsimileTelephoneNumber */
    protected String facsimileTelephoneNumber;

    /** gidNumber */
    protected Long gidNumber;

    /** givenName */
    protected String givenName;

    /** groups */
    protected String[] groups;

   *     that involve a null element being present.
   */
  protected int getNullLocation() {
    return getNumElements() / 2;
  }

  protected MinimalCollection<E> createDisjointCollection() {
    return MinimalCollection.of(e3(), e4());
  }

  protected MinimalCollection<E> emptyCollection() {
    return MinimalCollection.<E>of();
  }

  protected final E e0() {
    return samples.e0();
  }

    // keeping parsed request parameters, normal texts or uploaded files
    // keys are requested parameter names (treated as field name here)
    protected Map<String, Object> elementsAll; // lazy-loaded, then after not null
    protected Map<String, MultipartFormFile> elementsFile; // me too
    protected Map<String, String[]> elementsText; // me too

    // ===================================================================================

    @Resource
    private Client client;

    protected int sizeForDelete = 100;
    protected String scrollForDelete = "1m";
    protected int sizeForCursor = 100;
    protected String scrollForCursor = "1m";
    protected String searchTimeout = "3m";
    protected String indexTimeout = "3m";
    protected String scrollSearchTimeout = "3m";
    protected String bulkTimeout = "3m";
    protected String deleteTimeout = "3m";

    /** queryPageSize */
    protected Integer queryPageSize;

    /** queryTime */
    protected Long queryTime;

    /** referer */
    protected String referer;

    /** requestedAt */
    protected LocalDateTime requestedAt;

    /** responseTime */
    protected Long responseTime;

    /** roles */
    protected String[] roles;

    /** searchWord */
    protected String searchWord;

        currentSsoType = "invalid";
        ssoManager = new SsoManager() {
            @Override
            protected String getSsoType() {
                return currentSsoType;
            }

            @Override
            protected SsoAuthenticator getAuthenticator() {
                return null;
            }
        };
        assertNull(ssoManager.getLoginCredential());
    }

    protected DocMeta docMeta;
    protected final EntityUniqueDrivenProperties __uniqueDrivenProperties = newUniqueDrivenProperties();
    protected final EntityModifiedProperties __modifiedProperties = newModifiedProperties();
    protected EntityModifiedProperties __specifiedProperties;
    protected boolean __createdBySelect;

    protected DocMeta docMeta;
    protected final EntityUniqueDrivenProperties __uniqueDrivenProperties = newUniqueDrivenProperties();
    protected final EntityModifiedProperties __modifiedProperties = newModifiedProperties();
    protected EntityModifiedProperties __specifiedProperties;
    protected boolean __createdBySelect;