ms.add("c", 1);
    ms.add("a", 3);
    ms.add("b", 2);
    SortedSet<String> elementSet = ms.elementSet();

    assertThat(elementSet.first()).isEqualTo("a");
    assertThat(elementSet.last()).isEqualTo("c");
    assertEquals(Ordering.natural(), elementSet.comparator());

    assertThat(elementSet.headSet("b")).containsExactly("a");
    assertThat(elementSet.tailSet("b")).containsExactly("b", "c").inOrder();

# Tutorial - Guía del Usuario { #tutorial-user-guide }

Este tutorial te muestra cómo usar **FastAPI** con la mayoría de sus funcionalidades, paso a paso.

Cada sección se basa gradualmente en las anteriores, pero está estructurada para separar temas, de manera que puedas ir directamente a cualquier sección específica para resolver tus necesidades específicas de API.

		return true
	})

	return nil
}

var (
	errLegacyXLMeta   = errors.New("legacy XL meta")
	errOutdatedXLMeta = errors.New("outdated XL meta")
	errPartCorrupt    = errors.New("part corrupt")
	errPartMissing    = errors.New("part missing")
)

// Only heal on disks where we are sure that healing is needed. We can expand
// this list as and when we figure out more errors can be added to this list safely.

*/
subject: [FESS] /*pmb.level*/ Log Alert: /*pmb.hostname*/
>>>
--- Server Info ---
Host Name: /*pmb.hostname:orElse('Unknown')*/

--- Log Summary ---
Level: /*pmb.level*/
Total: /*pmb.count*/ event(s) in the last /*pmb.interval*/ seconds

--- Log Details ---
/*pmb.details*/

                .desc("Configure which severity of logging should cause the build to fail")
                .hasArg()
                .build());
        options.addOption(Option.builder(FAIL_FAST)
                .longOpt("fail-fast")
                .desc("Stop at first failure in reactorized builds")
                .build());
        options.addOption(Option.builder(FAIL_AT_END)
                .longOpt("fail-at-end")

 * thus currentVersion will be one of these.
 * <p>
 * Considering:
 * <dl>
 *     <dt>M, M &gt; 0</dt>
 *     <dd>last released major</dd>
 *     <dt>N, N &gt; 0</dt>
 *     <dd>last released minor</dd>
 * </dl>
 *
 * <ul>
 * <li>the unreleased <b>major</b>, M+1.0.0 on the `master` branch</li>

///

## `Last-Event-ID`로 재개하기 { #resuming-with-last-event-id }

브라우저가 연결이 끊긴 후 재연결할 때, 마지막으로 받은 `id`를 `Last-Event-ID` 헤더에 담아 보냅니다.

헤더 파라미터로 이를 읽어와 클라이언트가 중단한 지점부터 스트림을 재개할 수 있습니다:

{* ../../docs_src/server_sent_events/tutorial004_py310.py hl[25,27,31] *}

## POST로 SSE 사용하기 { #sse-with-post }

SSE는 `GET`뿐만 아니라 **모든 HTTP 메서드**와 함께 동작합니다.

    assertEquals("Should be able to peek() at last element", "C", peekingIterator.peek());
    assertEquals(
        "Should be able to peek() last element multiple times", "C", peekingIterator.peek());
    assertEquals(
        "next() should still return last element after peeking", "C", peekingIterator.next());

   * and a node with "nextEntry" pointer equal to {@code ENDPOINT} is the last node.
   */
  @VisibleForTesting transient long[] links;

  /** Pointer to the first node in the linked list, or {@code ENDPOINT} if there are no entries. */
  private transient int firstEntry;

  /** Pointer to the last node in the linked list, or {@code ENDPOINT} if there are no entries. */
  private transient int lastEntry;

        }

        @Override
        public <T extends Credentials> T unwrap(Class<T> type) {
            if (type.isInstance(this)) {
                return type.cast(this);
            }
            throw new ClassCastException("Cannot unwrap to " + type.getName());
        }
    }

    static class SelfRenewingCreds extends BaseCreds {
        @Override