The stanza

	// #include <gmp.h>
	import "C"

is a signal to cgo.  The doc comment on the import of "C" provides
additional context for the C file.  Here it is just a single #include
but it could contain arbitrary C definitions to be imported and used.

Cgo recognizes any use of a qualified identifier C.xxx and uses gcc to
find the definition of xxx.  If xxx is a type, cgo replaces C.xxx with

import java.nio.charset.CoderResult;
import java.nio.charset.CodingErrorAction;
import java.util.Arrays;

/**
 * An {@link InputStream} that converts characters from a {@link Reader} into bytes using an
 * arbitrary Charset.
 *
 * <p>This is an alternative to copying the data to an {@code OutputStream} via a {@code Writer},
 * which is necessarily blocking. By implementing an {@code InputStream} it allows consumers to

import java.util.Objects;
import org.jspecify.annotations.Nullable;

/**
 * A generalized interval on any ordering, for internal use. Supports {@code null}. Unlike {@link
 * Range}, this allows the use of an arbitrary comparator. This is designed for use in the
 * implementation of subcollections of sorted collection types.
 *
 * <p>Whenever possible, use {@code Range} instead, which is better supported.
 *
 * @author Louis Wasserman

## 模型的清單 { #list-of-models }

同樣地，你可以將回應宣告為物件的 `list`。

為此，使用標準的 Python `list`：

{* ../../docs_src/extra_models/tutorial004_py310.py hl[18] *}

## 以任意 `dict` 作為回應 { #response-with-arbitrary-dict }

你也可以用一般的任意 `dict` 宣告回應，只需指定鍵和值的型別，而不必使用 Pydantic 模型。

當你事先不知道可用的欄位／屬性名稱（定義 Pydantic 模型所需）時，這很實用。

此時可使用 `dict`：

{* ../../docs_src/extra_models/tutorial005_py310.py hl[6] *}

import com.google.common.primitives.UnsignedInts;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.Serializable;
import org.jspecify.annotations.Nullable;

/**
 * An immutable hash code of arbitrary bit length.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 * @since 11.0
 */
public abstract class HashCode {
  HashCode() {}

// unique set. data is expected to be pre-sorted, and the resulting set in
// the range [0:size] will remain in sorted order. Uniq, following a
// sort.Sort call, can be used to prepare arbitrary inputs for use as sets.
func uniq(data sort.Interface) (size int) {
	p, l := 0, data.Len()
	if l <= 1 {
		return l
	}
	for i := 1; i < l; i++ {
		if !data.Less(p, i) {
			continue
		}
		p++

	// and must use forward slashes instead of back slashes. A trailing slash
	// indicates that this file is a directory and should have no data.
	Name string

	// Comment is any arbitrary user-defined string shorter than 64KiB.
	Comment string

	// NonUTF8 indicates that Name and Comment are not encoded in UTF-8.
	//
	// By specification, the only other encoding permitted should be CP-437,

     * If the given scope is {@code null}, then this method returns the enabled sources for all scopes.
     * If the given language is {@code null}, then this method returns the enabled sources for all languages.
     * An arbitrary number of source roots may exist for the same scope and language.
     * It may be, for example, the case of a multi-versions project.
     * The iteration order is the order in which the sources are declared in the POM file.

     * <p>{@code [<E>]} will be returned for ArrayList's constructor. When both the class and the
     * constructor have type parameters, the class parameters are prepended before those of the
     * constructor's. This is an arbitrary rule since no existing language spec mandates one way or
     * the other. From the declaration syntax, the class type parameter appears first, but the call
     * syntax may show up in opposite order such as {@code new <A>Foo<B>()}.

                            || message.contains("unregistered")));
        }
    }

    /**
     * Security test: Custom class should be rejected.
     * This test verifies that arbitrary user-defined classes cannot be serialized,
     * which is important for preventing gadget chain attacks.
     */
    @Test
    public void test_security_customClassRejected() {