/**
     * Flag to return only a single directory entry.
     */
    public static final byte SMB2_RETURN_SINGLE_ENTRY = 0x2;

    /**
     * Flag indicating that the file index field contains a valid index.
     */
    public static final byte SMB2_INDEX_SPECIFIED = 0x4;

    /**
     * Flag to reopen the directory enumeration.
     */
    public static final byte SMB2_REOPEN = 0x10;

          "updatedTime" : {
            "type" : "long"
          },
          "virtualHost" : {
            "type" : "keyword"
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "dbflute" : {
          "related_query" : {
            "properties" : {
              "queries" : {
                "array" : "true"
              }
            }
          }
        },

  -H "Content-Type: application/x-ndjson" \
  -u admin:admin \
  --data-binary @fess-documents.json
```

#### Index Settings Migration

Fess uses OpenSearch/Elasticsearch internally, so you can:

1. Export index mappings and settings from source
2. Apply custom analyzers in Fess's `fess_config.properties`
3. Create synonym dictionaries in Fess's dictionary directory

---

    /**
     * Displays the main synonym dictionary index page.
     *
     * @param form the search form containing search criteria
     * @return HTML response for the synonym dictionary index page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        validate(form, messages -> {}, this::asDictIndexHtml);

                        if (hasNext || next != null) {
                            results[index] = false; // Mark as failed if unexpected result
                            return;
                        }
                    }
                    results[index] = true; // Mark as successful
                });
                threads[i].start();
            }

          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "dbflute" : {
          "access_token" : {
            "properties" : {
              "permissions" : {
                "array" : "true"
              }
            }
          }
        },

    @Override
    public void add(int index, E element) {
      synchronized (mutex) {
        delegate().add(index, element);
      }
    }

    @Override
    public boolean addAll(int index, Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(index, c);
      }
    }

    @Override
    public E get(int index) {
      synchronized (mutex) {

    @Override
    public void add(int index, E element) {
      synchronized (mutex) {
        delegate().add(index, element);
      }
    }

    @Override
    public boolean addAll(int index, Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(index, c);
      }
    }

    @Override
    public E get(int index) {
      synchronized (mutex) {

    @Override
    protected String getActionRole() {
        return ROLE;
    }

    /**
     * Displays the plugin management index page.
     *
     * @return HTML response for the index page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();
        return asListHtml();
    }

    /**
     * Deletes the specified plugin.
     *

     */
    private int countUniqueBytes(byte[] data) {
        boolean[] seen = new boolean[256];
        int count = 0;

        for (byte b : data) {
            int index = b & 0xFF;
            if (!seen[index]) {
                seen[index] = true;
                count++;
            }
        }

        return count;
    }