}

// NewLRWMutex - initializes a new lsync RW mutex.
func NewLRWMutex() *LRWMutex {
	return &LRWMutex{}
}

// Lock holds a write lock on lm.
//
// If the lock is already in use, the calling go routine
// blocks until the mutex is available.
func (lm *LRWMutex) Lock() {
	const isWriteLock = true
	lm.lockLoop(context.Background(), lm.id, lm.source, math.MaxInt64, isWriteLock)
}

   * to all callers.
   *
   * If computing multiple values is problematic, use an appropriate concurrency mechanism in your
   * [computeIfAbsent] implementation. No locks are held while calling this function.
   */
  fun <T : Any> tag(
    type: KClass<T>,
    computeIfAbsent: () -> T,
  ): T

  /**
   * Returns the tag attached with [type] as a key. If it is absent, then [computeIfAbsent] is

import org.junit.rules.TestRule
import org.junit.runner.Description
import org.junit.runners.model.Statement

/**
 * A log handler that records which log messages were published so that a calling test can make
 * assertions about them.
 */
class TestLogHandler(
  private val logger: Logger,
) : TestRule,
  BeforeEachCallback,
  AfterEachCallback {

    }

    @Test
    @DisplayName("auth type is always NTLM")
    void testAuthTypeConstant(@Mock HttpServletRequest mockRequest, @Mock Principal mockPrincipal) {
        // No need to stub getName() since we're not calling getRemoteUser()
        NtlmHttpServletRequest request = new NtlmHttpServletRequest(mockRequest, mockPrincipal);
        assertEquals("NTLM", request.getAuthType());
        // Verify it returns the same value on multiple calls

An example could be that you have an external authentication provider that you need to call.

You send it a token and it returns an authenticated user.

This provider might be charging you per request, and calling it might take some extra time than if you had a fixed mock user for tests.

You probably want to test the external provider once, but not necessarily call it for every test that runs.

// very first conversation step) and attempts to move the authentication
// conversation forward.  It returns a string to be sent to the server or an
// error if the server message is invalid.  Calling Step after a conversation
// completes is also an error.
func (x *XDGSCRAMClient) Step(challenge string) (response string, err error) {
	response, err = x.ClientConversation.Step(challenge)
	return response, err
}

HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(Level.BASIC);
OkHttpClient client = new OkHttpClient.Builder()
  .addInterceptor(logging)
  .build();
```

You can change the log level at any time by calling `setLevel()`.

To log to a custom location, pass a `Logger` instance to the constructor.
```java
HttpLoggingInterceptor logging = new HttpLoggingInterceptor(new Logger() {
  @Override public void log(String message) {

          + "so it cannot be reused to connect the following nodes: %s.";
  static final String MULTIPLE_EDGES_CONNECTING =
      "Cannot call edgeConnecting() when parallel edges exist between %s and %s. Consider calling "
          + "edgesConnecting() instead.";
  static final String PARALLEL_EDGES_NOT_ALLOWED =
      "Nodes %s and %s are already connected by a different edge. To construct a graph "

            copySpec.rename(s -> destinationFile.getName());

            // TODO: Maybe this could be simplified by not using the copy infrastructure and just
            // calling the FilterReader ourselves.  We're just taking one file and turning it into another.

            // The order here is important! tokens are inserted by the transformer
            Map<String, Object> parameters = new HashMap<>();

        // and a file that is READONLY, HIDDEN, and SYSTEM
        when(mockFile.getAttributes()).thenReturn(SmbFile.ATTR_READONLY | SmbFile.ATTR_HIDDEN | SmbFile.ATTR_SYSTEM);

        // When calling accept
        // Then it should be accepted because the READONLY attribute is present
        assertTrue(dosFileFilter.accept(mockFile));
    }

    /**