</field>
        <field>
          <name>os</name>
          <version>1.0.0</version>
          <description><![CDATA[
            Specifies that this profile will be activated when matching OS attributes are detected.
          ]]></description>
          <association>
            <type>ActivationOS</type>
          </association>
        </field>
        <field>
          <name>property</name>

The same way, this database wouldn't receive a Pydantic model (an object with attributes), only a `dict`.

You can use `jsonable_encoder` for that.

It receives an object, like a Pydantic model, and returns a JSON compatible version:

{* ../../docs_src/encoder/tutorial001_py310.py hl[4,21] *}

import jcifs.internal.smb1.ServerMessageBlock;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * Response for SMB1 COM_QUERY_INFORMATION command.
 *
 * This response contains file attributes, size, and timestamps
 * for the requested file or directory.
 */
public class SmbComQueryInformationResponse extends ServerMessageBlock implements SmbBasicFileInfo {

    private int fileAttributes = 0x0000;

* `tags: List[str] = []` has a default of an empty list: `[]`.

but you might want to omit them from the result if they were not actually stored.

For example, if you have models with many optional attributes in a NoSQL database, but you don't want to send very long JSON responses full of default values.

### Use the `response_model_exclude_unset` parameter { #use-the-response-model-exclude-unset-parameter }

# LDAP attribute for home postal address.
ldap.attr.homePostalAddress=homePostalAddress
# LDAP attribute for labeled URI.
ldap.attr.labeledURI=labeledURI
# LDAP attribute for room number.
ldap.attr.roomNumber=roomNumber
# LDAP attribute for description.
ldap.attr.description=description
# LDAP attribute for title.
ldap.attr.title=title
# LDAP attribute for pager.
ldap.attr.pager=pager
# LDAP attribute for street.

* For `PUT` requests to `/items/{item_id}`, read the body as JSON:
    * Check that it has a required attribute `name` that should be a `str`.
    * Check that it has a required attribute `price` that has to be a `float`.
    * Check that it has an optional attribute `is_offer`, that should be a `bool`, if present.
    * All this would also work for deeply nested JSON objects.

     *
     * @return the treeHandle
     */
    public final SmbTreeHandleImpl getTreeHandle() {
        return this.treeHandle;
    }

    /**
     * Gets the search attributes for this iterator.
     *
     * @return the search attributes used for filtering directory entries
     */
    public final int getSearchAttributes() {
        return this.searchAttributes;
    }

    /**

import jcifs.util.Hexdump;

/**
 * Trans2 QueryFSInformation request message for querying file system information.
 * This class implements the TRANS2_QUERY_FS_INFORMATION transaction to retrieve
 * various file system attributes such as volume information, size, and capabilities.
 */
public class Trans2QueryFSInformation extends SmbComTransaction {

    private final int informationLevel;

    /**

        assertEquals(access, readAccess);
    }

    @Test
    @DisplayName("Test file attributes setter")
    void testSetFileAttributes() {
        request = new Smb2CreateRequest(mockConfig, "test.txt");

        int attributes = 0x00000020; // FILE_ATTRIBUTE_ARCHIVE
        request.setFileAttributes(attributes);

        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, 0);

   *
   * OneAsymmetricKey ::= SEQUENCE {
   *   version                   Version,
   *   privateKeyAlgorithm       PrivateKeyAlgorithmIdentifier,
   *   privateKey                PrivateKey,
   *   attributes            [0] Attributes OPTIONAL,
   *   ...,
   *   [[2: publicKey        [1] PublicKey OPTIONAL ]],
   *   ...
   * }
   *
   * PrivateKeyInfo ::= OneAsymmetricKey
   * ```
   */