Typically HTTP headers work like a `Map<String, String>`: each field has one value or none. But some headers permit multiple values, like Guava's [Multimap](https://guava.dev/releases/23.0/api/docs/com/google/common/collect/Multimap.html). For example, it's legal and common for an HTTP response to supply multiple `Vary` headers. OkHttp's APIs attempt to make both cases comfortable.

        // try-with-resources should close both
        verify(session).close();
        verify(transport).close();
    }

    @Test
    @DisplayName("getServerTimeZoneOffset: SMB1 negotiate path multiplies minutes to millis")
    void getServerTimeZoneOffsetSmb1() throws Exception {
        // Uses concrete SMB1 negotiate response to exercise SMB1-specific branch

        assertEquals(1, item.getInputs().length);
        assertEquals("", item.getInputs()[0]);
        assertEquals("output", item.getOutput());
    }

    // Test reload with multiple inputs
    public void test_reload_multipleInputs() throws Exception {
        writeTestFile("a,b,c,d,e => output\n");

        PagingList<CharMappingItem> result = charMappingFile.selectList(0, 10);

        FileNotifyInformation info = notifications.get(0);
        assertEquals(1, info.getAction());
        assertEquals("test.txt", info.getFileName());
    }

    @Test
    @DisplayName("Should read multiple notifications from wire format")
    void testReadMultipleNotifications() throws Exception {
        // Given
        byte[] buffer = new byte[1024];
        int offset = 0;

        // Set header start position

    @DisplayName("Should maintain immutability of structure size")
    void testStructureSizeImmutability() throws Exception {
        // Given
        byte[] buffer = new byte[2048];

        // When - encode at multiple positions
        for (int i = 0; i < 5; i++) {
            Smb2TreeConnectRequest req = new Smb2TreeConnectRequest(mockConfig, TEST_PATH);
            req.encode(buffer, i * 200);
        }

   * sort entries by value.
   *
   * <p>Builder instances can be reused - it is safe to call {@link #buildOrThrow} multiple times to
   * build multiple maps in series. Each map is a superset of the maps created before it.
   *
   * @since 2.0
   */
  @DoNotMock
  public static class Builder<K, V> {

	fmt.Printf("Attempting to combine version %q.\n", out)
	m, err := readAndMap(files, 1, 0)
	if err != nil {
		return err
	}
	if m.blocks > 0 {
		// TODO: Support multiple blocks. For now use -xver.
		return fmt.Errorf("multiple blocks found, only one block supported. Try with -xver")
	}
	lastValid := 0
	missing := 0
	for i := range m.filled {
		if m.filled[i] == 1 {
			lastValid = i
		} else {

  @AndroidIncompatible // presumably slow
  public void testCheckedMultiply() {
    for (int a : ALL_INTEGER_CANDIDATES) {
      for (int b : ALL_INTEGER_CANDIDATES) {
        BigInteger expectedResult = valueOf(a).multiply(valueOf(b));
        boolean expectedSuccess = fitsInInt(expectedResult);
        try {
          assertEquals(a * b, IntMath.checkedMultiply(a, b));
          assertTrue(expectedSuccess);

import okhttp3.internal.concurrent.notifyAll
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Source
import okio.Timeout

/**
 * Replicates a single upstream source into multiple downstream sources. Each downstream source
 * returns the same bytes as the upstream source. Downstream sources may read data either as it
 * is returned by upstream, or after the upstream source has been exhausted.
 *

  /** Test null reference yields error */
  public void testAddNullReference() {
    assertThrows(NullPointerException.class, () -> equalsTester.addEqualityGroup((Object) null));
  }

  /** Test equalObjects after adding multiple instances at once with a null */
  public void testAddTwoEqualObjectsAtOnceWithNull() {
    assertThrows(
        NullPointerException.class,
        () -> equalsTester.addEqualityGroup(reference, equalObject1, null));
  }