if (array.length == 0) {
      return "";
    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 5);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

  /**

  static {
    ImmutableList.Builder<String> builder = ImmutableList.builder();
    char[] surrogates = {
      MAX_LOW_SURROGATE, MAX_HIGH_SURROGATE, MIN_LOW_SURROGATE, MIN_HIGH_SURROGATE,
    };
    for (char surrogate : surrogates) {
      builder.add(newString(surrogate));
      builder.add(newString(surrogate, 'n'));
      builder.add(newString('n', surrogate));
      builder.add(newString(surrogate, surrogate));
    }

            stream(defaultSortBuilders).of(stream -> stream.forEach(builder -> list.add(builder)));
        }
        list.add(createFieldSortBuilder(fieldName, SortOrder.DESC.toString().equalsIgnoreCase(order) ? SortOrder.DESC : SortOrder.ASC));
        defaultSortBuilders = list.toArray(new SortBuilder[list.size()]);
    }

    /**
     * Creates a sort builder for the specified field and order.

    /**
     * Parses the XML.
     *
     * @param builder
     *            {@link DocumentBuilder}; must not be {@literal null}.
     * @param is
     *            Input stream; must not be {@literal null}.
     * @return {@link Document}
     */
    public static Document parse(final DocumentBuilder builder, final InputStream is) {
        assertArgumentNotNull("builder", builder);
        assertArgumentNotNull("is", is);

      // Generate a self-signed cert for the server to serve and the client to trust.
      val heldCertificate =
        HeldCertificate
          .Builder()
          .commonName(hostname)
          .addSubjectAlternativeName(hostname)
          .build()
      HandshakeCertificates
        .Builder()
        .heldCertificate(heldCertificate)
        .addTrustedCertificate(heldCertificate.certificate)
        .build()
    }

    assertThat(response.code).isEqualTo(0)
  }

  @Test fun defaultResponseBodyIsEmpty() {
    val response =
      Response
        .Builder()
        .request(
          Request
            .Builder()
            .url("https://example.com/")
            .build(),
        ).protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("OK")
        .build()

    ```kotlin
      private val client = OkHttpClient.Builder()
          .certificatePinner(
              CertificatePinner.Builder()
                  .add("publicobject.com", "sha256/afwiKY3RxoMmLkuRW1l7QsPZTJPwDS2pdDROQjXw8ig=")
                  .build())
          .build()

      fun run() {
        val request = Request.Builder()
            .url("https://publicobject.com/robots.txt")
            .build()

@NullUnmarked
public class CharEscaperBuilderTest extends TestCase {

  public void testAddEscapes() {
    char[] cs = {'a', 'b', 'c'};
    CharEscaperBuilder builder = new CharEscaperBuilder().addEscapes(cs, "Z");
    Escaper escaper = builder.toEscaper();
    assertThat(escaper.escape("abcdef")).isEqualTo("ZZZdef");
  }

import org.jspecify.annotations.NullUnmarked;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link ImmutableGraph} and {@link ImmutableGraph.Builder} that are not ready covered by
 * {@link StandardImmutableDirectedGraphTest}.
 */
@RunWith(JUnit4.class)
@NullUnmarked
public class StandardImmutableGraphAdditionalTest {

  @Test
  public void immutableGraph() {

    // Raised https://github.com/mannodermaus/android-junit5/issues/228 to reevaluate
    val androidMorEarlier = Build.VERSION.SDK_INT <= 23

    val clientBuilder = OkHttpClient.Builder()

    if (androidMorEarlier) {
      val cert: X509Certificate =
        """
        -----BEGIN CERTIFICATE-----
        MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw