successorsReference = new SoftReference<>(successors);
    }
    return successors;
  }

  @Override
  public Set<E> edgesConnecting(N node) {
    return new MultiEdgesConnecting<E>(outEdgeMap, node) {
      @Override
      public int size() {
        return successorsMultiset().count(node);
      }
    };
  }

  @Override

      successorsReference = new SoftReference<>(successors);
    }
    return successors;
  }

  @Override
  public Set<E> edgesConnecting(N node) {
    return new MultiEdgesConnecting<E>(outEdgeMap, node) {
      @Override
      public int size() {
        return successorsMultiset().count(node);
      }
    };
  }

  @Override

    /**
     * Gets the negotiated context flags.
     * @return context flags
     */
    int getFlags();

    /**
     * Gets the array of supported security mechanism OIDs.
     * @return array of supported mechanism OIDs
     */
    ASN1ObjectIdentifier[] getSupportedMechs();

    /**
     * Checks whether this mechanism supports message integrity.
     * @return whether this mechanisms supports integrity
     */

            return false;
        }
    }

    static class MockSystemHelper extends SystemHelper {
        @Override
        public long getCurrentTimeAsLong() {
            return System.currentTimeMillis();
        }

        @Override
        public String getSearchRoleByRole(String role) {
            return "search_" + role;
        }
    }

    private Map<String, Object> fields;

    @Override
    public String getId() {
        return asDocMeta().id();
    }

    public void setId(final String id) {
        asDocMeta().id(id);
    }

    @Override
    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    @Override

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override
    protected String getKeyProperty() {
        return KEY_PROPERTY;
    }

    @Override
    protected String getListEndpointSuffix() {
        return LIST_ENDPOINT_SUFFIX;
    }

    @Override

  protected final @Nullable T endOfData() {
    state = State.DONE;
    return null;
  }

  @Override
  public final boolean hasNext() {
    checkState(state != State.FAILED);
    switch (state) {
      case DONE:
        return false;
      case READY:
        return true;
      default:
    }
    return tryToComputeNext();
  }

  private boolean tryToComputeNext() {

     *
     * @return the count of bytes written
     */
    public long getCount() {
        return this.count;
    }

    @Override
    protected int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

        return 0;
    }

    @Override
    protected int readParametersWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readDataWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    public String toString() {