De la misma manera que hay un `Query` y `Path` para definir datos extra para parámetros de query y path, **FastAPI** proporciona un equivalente `Body`.

Por ejemplo, ampliando el modelo anterior, podrías decidir que deseas tener otra clave `importance` en el mismo cuerpo, además de `item` y `user`.

Si lo declaras tal cual, debido a que es un valor singular, **FastAPI** asumirá que es un parámetro de query.

    private AuditEntry getAuditEntry() {
        AuditEntry entry = auditEntryPool.poll();
        if (entry == null) {
            entry = new AuditEntry();
        } else {
            // Reset the entry
            entry.context = null;
            entry.message = null;
            entry.eventType = null;
            entry.severity = null;
            entry.timestamp = null;
        }

	WriteCSV(writer io.Writer, opts WriteCSVOpts) error
	WriteJSON(writer io.Writer) error

	// Clone the record and if possible use the destination provided.
	Clone(dst Record) Record
	Reset()

	// Returns underlying representation
	Raw() (SelectObjectFormat, any)

	// Replaces the underlying data
	Replace(k any) error
}

// IterToValue converts a simdjson Iter to its underlying value.

        try (TokenStream stream = createTokenStream(rd)) {
            if (stream == null) {
                throw new IOException("Invalid tokenizer.");
            }
            stream.reset();

            int offset = 0;
            while (stream.incrementToken()) {
                final CharTermAttribute att = stream.getAttribute(CharTermAttribute.class);
                final String term = att.toString();

    // cause system property.  This allows us to run with both settings of the property in one jvm
    // without resorting to even crazier hacks to reset static final boolean fields.
    System.setProperty("guava.concurrent.generate_cancellation_cause", "true");
    String concurrentPackage = SettableFuture.class.getPackage().getName();
    classReloader =

			logCopy := [dynamicTimeoutLogSize]time.Duration{}
			copy(logCopy[:], dt.log[:])

			// reset log entries
			atomic.StoreInt64(&dt.entries, 0)
			dt.mutex.Unlock()

			dt.adjust(logCopy)
			return
		}
		dt.mutex.Unlock()
	}
}

// adjust changes the value of the dynamic timeout based on the
// previous results
func (dt *dynamicTimeout) adjust(entries [dynamicTimeoutLogSize]time.Duration) {

%heading;\n  @include font-size($h4-font-size);\n}\n\nh5 {\n  @extend %heading;\n  @include font-size($h5-font-size);\n}\n\nh6 {\n  @extend %heading;\n  @include font-size($h6-font-size);\n}\n\n\n// Reset margins on paragraphs\n//\n// Similarly, the top margin on `<p>`s get reset. However, we also reset the\n// bottom margin to use `rem` units instead of `em`.\n\np {\n  margin-top: 0;\n  margin-bottom: $paragraph-margin-bottom;\n}\n\n\n// Abbreviations\n//\n// 1. Add the correct text decoration in...

		replicateSync:       tcfg.ReplicationSync,
		Bucket:              tcfg.TargetBucket,
		StorageClass:        tcfg.StorageClass,
		disableProxy:        tcfg.DisableProxy,
		ARN:                 tcfg.Arn,
		ResetID:             tcfg.ResetID,
		Endpoint:            tcfg.Endpoint,
		Secure:              tcfg.Secure,
	}
	return tc, nil
}

// getRemoteARN gets existing ARN for an endpoint or generates a new one.

pkg compress/lzw, method (*Reader) Close() error
pkg compress/lzw, method (*Reader) Read([]uint8) (int, error)
pkg compress/lzw, method (*Reader) Reset(io.Reader, Order, int)
pkg compress/lzw, method (*Writer) Close() error
pkg compress/lzw, method (*Writer) Reset(io.Writer, Order, int)
pkg compress/lzw, method (*Writer) Write([]uint8) (int, error)
pkg compress/lzw, type Reader struct
pkg compress/lzw, type Writer struct

Para trabajar con FastAPI necesitas instalar <a href="https://www.python.org/" class="external-link" target="_blank">Python</a>.

Después de eso, necesitarías **instalar** FastAPI y cualquier otro **paquete** que desees usar.

Para instalar paquetes normalmente usarías el comando `pip` que viene con Python (o alternativas similares).