string = $string; } public function getString(): string { return $this->string; } public function __toString(): string { return $this->string; } public static function fromObject(string $string): StringContent { return new StringContent($string); } public static function fromFile(string $path): StringContent { return new StringContent(file_get_contents($path)); } public static function fromRequest(): StringContent { return self::fromFile('php://input'); } }