/**
     * Get the JSON decoded body of the request.
     *
     * @return array
     */
    protected function json()
    {
        if (! $this->data) {
            $this->data = json_decode($this->body(), true) ?? [];
        }

        return $this->data;
    }
    
        /**
     * Get the JSON decoded body of the response as an array or scalar value.
     *
     * @param  string|null  $key
     * @param  mixed  $default
     * @param  int-mask<JSON_BIGINT_AS_STRING, JSON_INVALID_UTF8_IGNORE, JSON_INVALID_UTF8_SUBSTITUTE, JSON_OBJECT_AS_ARRAY, JSON_THROW_ON_ERROR>|null  $flags
     * @return mixed
     */
    public function json($key = null, $default = null, $flags = null)
    {
        $flags = $flags ?? self::$defaultJsonDecodingFlags;

        if (! $this->decoded || (isset($this->decodingFlags) && $this->decodingFlags !== $flags)) {
            $this->decoded = json_decode(
                $this->body(), true, flags: $flags
            );

            $this->decodingFlags = $flags;
        }

        if (is_null($key)) {
            return $this->decoded;
        }

        return data_get($this->decoded, $key, $default);
    }
    
        /**
     * Get the JSON decoded body of the response as an object.
     *
     * @param  int-mask<JSON_BIGINT_AS_STRING, JSON_INVALID_UTF8_IGNORE, JSON_INVALID_UTF8_SUBSTITUTE, JSON_OBJECT_AS_ARRAY, JSON_THROW_ON_ERROR>|null  $flags
     * @return object|null
     */
    public function object($flags = null)
    {
        return json_decode($this->body(), false, flags: $flags ?? self::$defaultJsonDecodingFlags);
    }