if (value != null) {
      return value;
    }

    // Store a local reference to the cache entry. If the backing map is immutable, this,
    // in combination with immutable cache entries, will ensure a thread-safe cache.
    CacheEntry<K, V> entry;

    // Check cache. We use == on purpose because it's cheaper and a cache miss is ok.
    entry = cacheEntry1;
    if (entry != null && entry.key == key) {

    void testIsSupportedAlwaysFalse() {
        SpnegoContext ctx = newContext();
        ASN1ObjectIdentifier any = new ASN1ObjectIdentifier("1.2.840.113554.1.2.2");
        assertFalse(ctx.isSupported(any));
        // Ensure delegate is not consulted
        verify(this.mechContext, never()).isSupported(any);
    }

    @Test
    @DisplayName("initSecContext with empty len returns initial NegTokenInit and delegates to mechContext")

    JAVA_HOME=$(java-config --jre-home)
  fi
fi

# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin; then
  [ -n "$JAVA_HOME" ] \
    && JAVA_HOME=$(cygpath --unix "$JAVA_HOME")
  [ -n "$CLASSPATH" ] \
    && CLASSPATH=$(cygpath --path --unix "$CLASSPATH")
fi

# For Mingw, ensure paths are in UNIX format before anything is touched
if $mingw; then

 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  // We deliberately avoid caching the asList and hashCode here, to ensure that with
  // compressed oops, a SingletonImmutableSet packs all the way down to the optimal 16 bytes.

  final transient E element;

  SingletonImmutableSet(E element) {

      TestByteSource failSource = new TestByteSource(new byte[10], option);
      TestByteSink okSink = new TestByteSink();
      assertThrows(IOException.class, () -> failSource.copyTo(okSink));
      // ensure stream was closed IF it was opened (depends on implementation whether or not it's
      // opened at all if source.newInputStream() throws).
      assertTrue(

    if (value != null) {
      return value;
    }

    // Store a local reference to the cache entry. If the backing map is immutable, this,
    // in combination with immutable cache entries, will ensure a thread-safe cache.
    CacheEntry<K, V> entry;

    // Check cache. We use == on purpose because it's cheaper and a cache miss is ok.
    entry = cacheEntry1;
    if (entry != null && entry.key == key) {

        assertEquals(NtStatus.NT_STATUS_UNSUCCESSFUL, ex.getNtStatus());

        // Verify: constructor should not have interacted with the cause
        Mockito.verifyNoInteractions(mockCause);
    }

    /**
     * Ensure toString includes the exception class name and message, providing a readable representation.
     */
    @Test
    @DisplayName("toString contains class name and message")
    void toString_containsClassAndMessage() {

/**
 * Resident invoker implementation, specialization of Maven Invoker, but keeps Maven instance resident. This implies, that
 * things like environment, system properties, extensions etc. are loaded only once. It is caller duty to ensure
 * that subsequent call is right for the resident instance (ie no env change or different extension needed).
 * This implementation "pre-populates" MavenContext with pre-existing stuff (except for very first call)

 * @param errorPoms the set of POMs that had errors
 */
public record UpgradeResult(Set<Path> processedPoms, Set<Path> modifiedPoms, Set<Path> errorPoms) {

    public UpgradeResult {
        // Defensive copying to ensure immutability
        processedPoms = Set.copyOf(processedPoms);
        modifiedPoms = Set.copyOf(modifiedPoms);
        errorPoms = Set.copyOf(errorPoms);
    }

    /**

			need = int(math.Min(float64(b-hdr), float64(need))) // use remaining tokens towards payload
			tokens = need + hdr
		} else { // part of header can be accommodated
			r.opts.HeaderSize -= b - 1
			need = 1 // to ensure we read at least one byte for every Read
			tokens = b
		}
	} else { // all tokens go towards payload
		need = int(math.Min(float64(b), float64(need)))
		tokens = need
	}