val uri = url.toUri()
      if (uri.host == null) return immutableListOf(Proxy.NO_PROXY)

      // Try each of the ProxySelector choices until one connection succeeds.
      val proxiesOrNull = address.proxySelector.select(uri)
      if (proxiesOrNull.isNullOrEmpty()) return immutableListOf(Proxy.NO_PROXY)

      return proxiesOrNull.toImmutableList()
    }

    call.eventListener.proxySelectStart(call, url)

     *
     * @param functions A collection of functions, each taking a String as input and returning a String.
     * @return A function that applies each function in the collection in order until a non-null result is found.
     *         If all functions return null, the composite function returns null.
     *
     * @throws NullPointerException if the input collection is null or contains null elements.
     */

        verify(transport, times(4)).close();
    }

    @Test
    @DisplayName("isSMB2 true and exception fallback to false")
    void isSMB2Cases() throws Exception {
        // Happy path returns true; transport exception path returns false
        when(transport.isSMB2()).thenReturn(true);
        assertTrue(handle.isSMB2());

        reset(transport);
        when(session.getTransport()).thenReturn(transport);

    nextAddress += count
    return (from until nextAddress)
      .map {
        return@map InetAddress.getByAddress(
          Buffer().writeInt(it.toInt()).readByteArray(),
        )
      }
  }

  /** Allocates and returns `count` fake IPv6 addresses like [::ff00:64, ::ff00:65].  */
  fun allocateIpv6(count: Int): List<InetAddress> {
    val from = nextAddress
    nextAddress += count
    return (from until nextAddress)

/**
 * Tests for the DfsReferral class.
 * This class tests the functionality of the DfsReferral class,
 * ensuring that objects are constructed correctly, appended properly,
 * and that the toString method returns the expected format.
 */
class DfsReferralTest {

    /**
     * Tests the default constructor of the DfsReferral class.
     * It verifies that a new DfsReferral object is initialized with its 'next'

    }

    /**
     * Returns artifacts exported by Maven core and core extensions. Artifacts are identified by their
     * groupId:artifactId string key.
     */
    public Set<String> getExportedArtifacts() {
        return artifacts;
    }

    /**
     * Returns packages exported by Maven core and core extensions.
     */

        error.initCause(e);
        throw error;
      }
    }
    return urls.build().toArray(new URL[0]);
  }

  /** Returns the URLs in the class path. */
  static URL[] getClassPathUrls() {
    return ClassPathUtil.class.getClassLoader() instanceof URLClassLoader
        ? ((URLClassLoader) ClassPathUtil.class.getClassLoader()).getURLs()

 */
@Experimental
public interface VersionConstraint {
    /**
     * Returns the range of this constraint, or {@code null} if none.
     * <p>
     * Note: only one, this method or {@link #getRecommendedVersion()} method must return non-{@code null} value.
     */
    @Nullable
    VersionRange getVersionRange();

    /**
     * Returns the recommended version of this constraint, or {@code null} if none.
     * <p>

    /**
     * Returns the file name extension of the artifact;
     * e.g. "jar", "pom", "xml", etc.
     *
     * @return the file extension
     */
    String getExtension();

    String getDirectory();

    /**
     * Returns the default classifier used if a different one is not set in pom.xml.
     *
     * @return the classifier
     */
    String getClassifier();

    /**
     * Writes the supplied settings to the specified character writer. The writer will be automatically closed before
     * the method returns.
     *
     * @param output The writer to serialize the settings to, must not be {@code null}.
     * @param options The options to use for serialization, may be {@code null} to use the default values.