Currently, Fess supports crawling the following [storage locations and APIs](https://fess.codelibs.org/15.3/admin/dataconfig-guide.html):

 - [Confluence/Jira](https://github.com/codelibs/fess-ds-atlassian)
 - [Box](https://github.com/codelibs/fess-ds-box)
 - [CSV](https://github.com/codelibs/fess-ds-csv)
 - [Database](https://github.com/codelibs/fess-ds-db)
 - [Dropbox](https://github.com/codelibs/fess-ds-dropbox)

You will see a simple page like:

<img src="/img/tutorial/websockets/image01.png">

You can type messages in the input box, and send them:

<img src="/img/tutorial/websockets/image02.png">

And your **FastAPI** application with WebSockets will respond back:

<img src="/img/tutorial/websockets/image03.png">

labels.employeeType=Employee Type
labels.user_facsimileTelephoneNumber=Facsimile Telephone Number
labels.facsimileTelephoneNumber=Facsimile Telephone Number
labels.user_postOfficeBox=Post Office Box
labels.postOfficeBox=Post Office Box
labels.user_initials=Initials
labels.initials=Initials
labels.user_carLicense=Car License
labels.carLicense=Car License
labels.user_mobile=Mobile
labels.mobile=Mobile

    assertThrows(IndexOutOfBoundsException.class, () -> iia3.subArray(1, 4));
  }

  /*
   * Whenever an implementation uses `instanceof` on a parameter instance, the test has to know that
   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(Collection<T> collection) {

labels.employeeType=Employee Type
labels.user_facsimileTelephoneNumber=Facsimile Telephone Number
labels.facsimileTelephoneNumber=Facsimile Telephone Number
labels.user_postOfficeBox=Post Office Box
labels.postOfficeBox=Post Office Box
labels.user_initials=Initials
labels.initials=Initials
labels.user_carLicense=Car License
labels.carLicense=Car License
labels.user_mobile=Mobile
labels.mobile=Mobile

      if (object instanceof AsList) {
        AsList that = (AsList) object;
        return this.parent.equals(that.parent);
      }
      // We could delegate to super now but it would still box too much
      if (!(object instanceof List)) {
        return false;
      }
      List<?> that = (List<?>) object;
      if (this.size() != that.size()) {
        return false;
      }

      if (object instanceof AsList) {
        AsList that = (AsList) object;
        return this.parent.equals(that.parent);
      }
      // We could delegate to super now but it would still box too much
      if (!(object instanceof List)) {
        return false;
      }
      List<?> that = (List<?>) object;
      if (this.size() != that.size()) {
        return false;
      }

# LDAP attribute for employee type.
ldap.attr.employeeType=employeeType
# LDAP attribute for facsimile telephone number.
ldap.attr.facsimileTelephoneNumber=facsimileTelephoneNumber
# LDAP attribute for post office box.
ldap.attr.postOfficeBox=postOfficeBox
# LDAP attribute for initials.
ldap.attr.initials=initials
# LDAP attribute for car license.
ldap.attr.carLicense=carLicense
# LDAP attribute for mobile.

    public static final String LABELS_FACSIMILE_TELEPHONE_NUMBER = "{labels.facsimileTelephoneNumber}";

    /** The key of the message: Post Office Box */
    public static final String LABELS_user_postOfficeBox = "{labels.user_postOfficeBox}";

    /** The key of the message: Post Office Box */
    public static final String LABELS_POST_OFFICE_BOX = "{labels.postOfficeBox}";

    /** The key of the message: Initials */

    String getLdapAttrFacsimileTelephoneNumber();

    /**
     * Get the value for the key 'ldap.attr.postOfficeBox'. <br>
     * The value is, e.g. postOfficeBox <br>
     * comment: LDAP attribute for post office box.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getLdapAttrPostOfficeBox();

    /**