LogStream.setLevel(0);
        assertEquals(0, LogStream.level);

        // 1 - critical [default]
        LogStream.setLevel(1);
        assertEquals(1, LogStream.level);

        // 2 - basic info can be logged under load
        LogStream.setLevel(2);
        assertEquals(2, LogStream.level);

        // 3 - almost everything
        LogStream.setLevel(3);
        assertEquals(3, LogStream.level);

                    // If request failed and we added advanced features, retry with a basic request
                    if ((leasesAdded || persistentHandlesAdded) && shouldRetryWithBasicRequest(e)) {
                        if (log.isDebugEnabled()) {
                            log.debug("CREATE request with advanced features failed ({}), retrying with basic request",

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()

    @Mock
    private ResourceFilter mockResourceFilter;

    @Mock
    private SID mockSID;

    @Mock
    private ACE mockACE;

    /**
     * Helper method to create a basic SmbResource mock without pre-stubbing
     */
    private SmbResource createMockResource() {
        return mock(SmbResource.class);
    }

    @BeforeEach
    void setUp() {

        headers = headersOf("www-authenticate", "Basic realm=\"protected area\""),
        body = "Please authenticate.",
      ),
    )
    server.enqueue(
      MockResponse(body = "Successful auth!"),
    )
    val credential = basic("username", "password")
    client =
      client
        .newBuilder()
        .authenticator(RecordingOkAuthenticator(credential, "Basic"))
        .build()

</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.

// StorageErr represents error generated by xlStorage call.
type StorageErr string

func (h StorageErr) Error() string {
	return string(h)
}

// Collection of basic errors.
var baseErrs = []error{
	errDiskNotFound,
	errFaultyDisk,
	errFaultyRemoteDisk,
}

var baseIgnoredErrs = baseErrs

// Is a one place function which converts all os.PathError

    // ============================================================
    // Authentication Type Constants
    // ============================================================

    /** Basic authentication type identifier. */
    public static final String BASIC = "BASIC";

    /** Digest authentication type identifier. */
    public static final String DIGEST = "DIGEST";

    /** NTLM authentication type identifier. */

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.Doubles;

/**
 * A mutable object which accumulates paired double values (e.g. points on a plane) and tracks some
 * basic statistics over all the values added so far. This class is not thread safe.
 *
 * @author Pete Gillin
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class PairedStatsAccumulator {

            assertEquals(24, lock.size());
        }
    }

    @Nested
    @DisplayName("Encoding Tests")
    class EncodingTests {

        @Test
        @DisplayName("Should encode basic lock structure correctly")
        void testBasicEncoding() {
            long offset = 0x1234567890ABCDEFL;
            long length = 0xFEDCBA0987654321L;
            int flags = 0x12345678;