private static boolean artifactEquals(Artifact a1, Artifact a2) {
        if (a1 == a2) {
            return true;
        }

        return Objects.equals(a1.getGroupId(), a2.getGroupId())
                && Objects.equals(a1.getArtifactId(), a2.getArtifactId())
                && Objects.equals(a1.getType(), a2.getType())
                && Objects.equals(a1.getVersion(), a2.getVersion())

        AppConfigurationEntry[] a2 = cfg.getAppConfigurationEntry("y");

        // Assert
        assertNotSame(a1, a2, "Arrays should be different instances");
        assertEquals(1, a1.length);
        assertEquals(1, a2.length);

        AppConfigurationEntry e1 = a1[0];
        AppConfigurationEntry e2 = a2[0];

        assertNotSame(e1, e2, "Entries should be different instances");

        NtlmPasswordAuthentication a2 = new NtlmPasswordAuthentication("DOM", "user", "pwd");
        SmbSession s1 = new SmbSession(addr, 445, inet, 0, a1);
        SmbSession s2 = new SmbSession(addr, 445, inet, 0, a2);
        // same auth instance => matches
        assertTrue(s1.matches(a1));
        // different instance but equal content => matches
        assertTrue(s1.matches(a2));
        // not equal => no match

    //
    // 1. Subscribers to events posted on different threads can be interleaved with each other
    //    freely. (A event on one thread, B event on another could yield any of
    //    [a1, a2, a3, b1, b2], [a1, b2, a2, a3, b2], [a1, b2, b3, a2, a3], etc.)
    // 2. It's possible for subscribers to actually be dispatched to in a different order than they
    //    were added to the queue. It's easily possible for one thread to take the head of the

        void testEqualsAndHashCode() throws Exception {
            SID a1 = new SID("S-1-5-21-1-2-3-4");
            SID a2 = new SID("S-1-5-21-1-2-3-4");
            SID b = new SID("S-1-5-21-1-2-3-5");

            assertEquals(a1, a2);
            assertEquals(a1.hashCode(), a2.hashCode());
            assertNotEquals(a1, b);
            assertNotEquals(a1.hashCode(), b.hashCode());

        // Host with root path -> possibleNTDomainOrWorkgroup=true
        UniAddress a2 = mock(UniAddress.class);
        UniAddress a3 = mock(UniAddress.class);
        when(nsc.getAllByName("server", true)).thenReturn(new Address[] { a2, a3 });
        SmbResourceLocatorImpl l3 = locator("smb://server/");
        assertSame(a2, l3.getAddress());
        verify(nsc, times(1)).getAllByName("server", true);

</p>

<pre>
type (
	A1 = string
	A2 = A1
)

type (
	B1 string
	B2 B1
	B3 []B1
	B4 B3
)

func f[P any](x P) { … }
</pre>

<p>
The underlying type of <code>string</code>, <code>A1</code>, <code>A2</code>, <code>B1</code>,
and <code>B2</code> is <code>string</code>.

   *
   * {@snippet :
   * PeekingIterator<String> peekingIterator =
   *     Iterators.peekingIterator(Iterators.forArray("a", "b"));
   * String a1 = peekingIterator.peek(); // returns "a"
   * String a2 = peekingIterator.peek(); // also returns "a"
   * String a3 = peekingIterator.next(); // also returns "a"
   * }
   *
   * <p>Any structural changes to the underlying iteration (aside from those performed by the