private static final int ALL_SET = ~0;

  private static int ceilToPowerOfTwo(int x) {
    return 1 << IntMath.log2(x, RoundingMode.CEILING);
  }

  /*
   * This method was written by Doug Lea with assistance from members of JCP JSR-166 Expert Group
   * and released to the public domain, as explained at
   * http://creativecommons.org/licenses/publicdomain
   *

"dar", "de", "deich", "deichniúr", "den", "dhá", "do", "don", "dtí", "dá", "dár", "dó", "faoi", "faoin", "faoina", "faoinár", "fara", "fiche", "gach", "gan", "go", "gur", "haon", "hocht", "i", "iad", "idir", "in", "ina", "ins", "inár", "is", "le", "leis", "lena", "lenár", "m'", "mar", "mo", "mé", "na", "nach", "naoi", "naonúr", "ná", "ní", "níor", "nó", "nócha", "ocht", "ochtar", "os", "roimh", "sa", "seacht", "seachtar", "seachtó", "seasca", "seisear", "siad", "sibh", "sinn", "sna", "sé", "sí", "tar",...

"dar", "de", "deich", "deichniúr", "den", "dhá", "do", "don", "dtí", "dá", "dár", "dó", "faoi", "faoin", "faoina", "faoinár", "fara", "fiche", "gach", "gan", "go", "gur", "haon", "hocht", "i", "iad", "idir", "in", "ina", "ins", "inár", "is", "le", "leis", "lena", "lenár", "m'", "mar", "mo", "mé", "na", "nach", "naoi", "naonúr", "ná", "ní", "níor", "nó", "nócha", "ocht", "ochtar", "os", "roimh", "sa", "seacht", "seachtar", "seachtó", "seasca", "seisear", "siad", "sibh", "sinn", "sna", "sé", "sí", "tar",...

Baixar e instalar as dependências do pacote **pode levar minutos**, mas usando o **cache** leva **segundos** no máximo.

    * Como o parâmetro `q` é declarado com `= None`, ele é opcional.
    * Sem o `None` ele poderia ser obrigatório (como o corpo no caso de `PUT`).
* Para requisições `PUT` para `/items/{item_id}`, lerá o corpo como JSON:
    * Verifica que tem um atributo obrigatório `name` que deve ser `str`.
    * Verifica que tem um atributo obrigatório `price` que deve ser `float`.

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck/JSR166TestCase.java?revision=1.90

   * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck/AbstractExecutorServiceTest.java?revision=1.30
   * which contained the following notice:
   *
   * Written by Doug Lea with assistance from members of JCP JSR-166 Expert Group and released to
   * the public domain, as explained at http://creativecommons.org/publicdomain/zero/1.0/
   *

 * @param <E> the type of the {@link InternalEntry} entry implementation used internally
 * @param <S> the type of the {@link Segment} entry implementation used internally
 * @author Bob Lee
 * @author Charles Fry
 * @author Doug Lea ({@code ConcurrentHashMap})
 */
// TODO(kak): Consider removing @CanIgnoreReturnValue from this class.
@J2ktIncompatible
@GwtIncompatible
@SuppressWarnings({
  "GuardedBy", // TODO(b/35466881): Fix or suppress.

\e>Ö }J8/Ö=_pOŠGxËæAXcÖ=@e ŒNrA,ÿ°S}€TÅ>ôkDyó~¾ÈgMY]Èues`B>Dc¼u`÷HCfK¢tc¾hEÂiK@¦\O\Iý_K¢yzUx:iDgDW®Ê \u{Óý2¬+U÷u¾reôi}OO¸}KA zoZŠ|e¼~m\}D îˆtÚ÷ cYr¾sqPwÐÚ² RoUJt‹8wÖGFgò3²L /ìAyÜ×Ùè¤}ZÚ DmziATÜE¾yZT÷ågK{ NevC2ö§ª›0²W# ZDitŠts¤G_ï¬Di K|}û~¾GHrMNsn4Ês#ÆÏÅ PVWu»E}ˆWyáÂ>p{Æu²EÊiBñ†iAIeq˺Nm²BæKªHiTIxÂŽ~g^qKzëTQ¨õÐñL}¼NfóªVq¦cVKt¯?†ZÖGEeòP¾ij¾rjs®øwKFºWW]ÜGi2ú ¼àuå†Knksp¸ALfã }|ò%Õ†xUpªqßNLñ~LeìÎqnd¾{^ñOjJˆúïÄiziyjeì {: _fïx`GLï}¡oñR^KkòGH GbPû^U`[eòBq4¨BPee}q„mÐ{JãB ²caòn}QòATIˆæ ²C 7ÖKrûTA¾reôgXKpÀ oXÜyQTGÖ¦ku...

 * href="http://tinyurl.com/ConcurrentHashMap">ConcurrentHashMap.java</a>.
 *
 * @author Charles Fry
 * @author Bob Lee ({@code com.google.common.collect.MapMaker})
 * @author Doug Lea ({@code ConcurrentHashMap})
 */
@SuppressWarnings({
  "GoodTime", // lots of violations (nanosecond math)
  "nullness", // too much trouble for the payoff
})
@GwtCompatible