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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Core; |
| 6 | |
| 7 | /** |
| 8 | * Contract for anything that can emit raw PDF syntax via `toPdf()`. |
| 9 | * |
| 10 | * Inline dictionaries (e.g., BorderStyle, TransitionDict) implement this |
| 11 | * directly — they serialize inside their parent and never get an object |
| 12 | * number. Top-level objects extend {@see PdfObject} instead, which adds |
| 13 | * indirect-object wrapping and registration with {@see File\ObjectRegistry}. |
| 14 | */ |
| 15 | interface Serializable |
| 16 | { |
| 17 | public function toPdf(): string; |
| 18 | } |