</div>

////

This information will be useful when learning about [Virtual Environments](virtual-environments.md){.internal-link target=_blank}.

## Conclusion { #conclusion }

With this you should have a basic understanding of what **environment variables** are and how to use them in Python.

     */
    protected boolean performReconnection(HandleInfo info) throws Exception {
        // This is a template method that should be implemented by the actual
        // SMB file implementation. For now, we'll provide a basic structure.

        log.debug("Performing reconnection for handle: {} (type: {})", info.getPath(), info.getType());

        // Create reconnect context

 *
 * @author mbechler
 *
 */
public class Smb2QueryDirectoryRequest extends ServerMessageBlock2Request<Smb2QueryDirectoryResponse> implements RequestWithFileId {

    /**
     * File information class for basic directory information.
     */
    public static final byte FILE_DIRECTORY_INFO = 0x1;

    /**
     * File information class for full directory information.
     */

        // Test that the exception has the correct serialVersionUID field
        ScriptEngineException exception = new ScriptEngineException("Serialization test");

        // Verify the exception can be created and basic properties work
        assertNotNull(exception);
        assertEquals("Serialization test", exception.getMessage());
    }

    public void test_stackTrace() {
        // Test that stack trace is properly maintained

        assertEquals(32, derivedKey256.length);
    }

    /**
     * Test method for {@link jcifs.pac.PacMac#expandNFold(byte[], int)}.
     */
    @Test
    void testExpandNFold() {
        // Test basic functionality
        byte[] data = { 1, 2, 3 };
        int outlen = 5;
        byte[] expanded = PacMac.expandNFold(data, outlen);
        assertNotNull(expanded);
        assertEquals(outlen, expanded.length);

Use `Response.challenges()` to get the schemes and realms of any authentication challenges. When fulfilling a `Basic` challenge, use `Credentials.basic(username, password)` to encode the request header.

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client = OkHttpClient.Builder()

        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override
    //                                                                      ==============
    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();

        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override
    //                                                                      ==============
    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();

    * Einem Header.
    * Einem Cookie.
* `http`: Standard-HTTP-Authentifizierungssysteme, einschließlich:
    * `bearer`: ein Header `Authorization` mit dem Wert `Bearer` plus einem Token. Dies wird von OAuth2 geerbt.
    * HTTP Basic Authentication.
    * HTTP Digest, usw.
* `oauth2`: Alle OAuth2-Methoden zum Umgang mit Sicherheit (genannt „Flows“).

    * A header.
    * A cookie.
* `http`: standard HTTP authentication systems, including:
    * `bearer`: a header `Authorization` with a value of `Bearer ` plus a token. This is inherited from OAuth2.
    * HTTP Basic authentication.
    * HTTP Digest, etc.
* `oauth2`: all the OAuth2 ways to handle security (called "flows").