* #sizeIfKnown}, returning true if it's known to be zero and false if it's known to be non-zero.
   * If the size is not known, it falls back to opening a stream and checking for EOF.
   *
   * <p>Note that, in cases where {@code sizeIfKnown} returns zero, it is <i>possible</i> that bytes
   * are actually available for reading. (For example, some special files may return a size of 0

   * natural ordering. The sorted sets use {@link Ordering#natural()} as the comparator. This method
   * provides more type-safety than {@link #builder}, as it can be called only for classes that
   * implement {@link Comparable}.
   */
  public static <E extends Comparable<?>> Builder<E> naturalOrder() {
    return new Builder<>(Ordering.natural());
  }

  /**

        MockNode nodeWithClass = new MockNode("div");
        nodeWithClass.addAttribute("class", "highlight");
        assertTrue(tag.matches(nodeWithClass));

        // Node with multiple classes including target
        MockNode nodeWithMultipleClasses = new MockNode("div");
        nodeWithMultipleClasses.addAttribute("class", "container highlight active");
        assertTrue(tag.matches(nodeWithMultipleClasses));

Mas quando você importa `Query`, `Path`, `Depends`, `Security` entre outros de `fastapi`, eles são na verdade funções que retornam classes especiais.

///

## Utilize `SecurityScopes` { #use-securityscopes }

Agora atualize a dependência `get_current_user`.

Este é o usado pelas dependências acima.

    int getHash();

    /** Gets the key for this entry. */
    K getKey();

    /** Gets the value for the entry. */
    V getValue();
  }

  /*
   * Note: the following classes have a lot of duplicate code. It sucks, but it saves a lot of
   * memory. If only Java had mixins!
   */

  /** Base class for {@link InternalEntry} implementations for strong keys. */

* For error messages related changes, follow the [ErrorMessages Guide](contributing/ErrorMessages.md).
* Add Javadoc for new methods and classes, following the [Javadoc Style Guide](contributing/JavadocStyleGuide.md). Javadoc is *required* for new public, top-level types.

/**
 * Static methods pertaining to ASCII characters (those in the range of values {@code 0x00} through
 * {@code 0x7F}), and to strings containing such characters.
 *
 * <p>ASCII utilities also exist in other classes of this package:
 *
 * <ul>
 *   <!-- TODO(kevinb): how can we make this not produce a warning when building gwt javadoc? -->
 *   <li>{@link StandardCharsets#US_ASCII} specifies the {@code Charset} of ASCII characters.

        authenticator.setMaxGroupDepth(5);

        // Test with depth one before the limit - should attempt to process
        // Will fail due to null user, but verifies depth check passes
        try {
            authenticator.getParentGroup(null, "test-id", 4);
            // If we reach here without NullPointerException, depth check passed
        } catch (NullPointerException e) {

     *   details of precondition failure to be hidden by an exception we throw about an unexpectedly
     *   null _failure message_)
     *
     * That combination upsets NullPointerTester, which wants any call that passes null for a
     * non-@Nullable parameter to trigger a NullPointerException.
     *
     * (We still define this empty method to keep PackageSanityTests from generating its own

     *   details of precondition failure to be hidden by an exception we throw about an unexpectedly
     *   null _failure message_)
     *
     * That combination upsets NullPointerTester, which wants any call that passes null for a
     * non-@Nullable parameter to trigger a NullPointerException.
     *
     * (We still define this empty method to keep PackageSanityTests from generating its own