diff --git a/src/Interfaces/SizeInterface.php b/src/Interfaces/SizeInterface.php
index 92ba6674..ba8fef44 100644
--- a/src/Interfaces/SizeInterface.php
+++ b/src/Interfaces/SizeInterface.php
@@ -16,4 +16,5 @@ interface SizeInterface
     public function isPortrait(): bool;
     public function alignPivot(string $position, int $offset_x = 0, int $offset_y = 0): SizeInterface;
     public function alignPivotTo(SizeInterface $size, string $position): SizeInterface;
+    public function contain(int $width, int $height): SizeInterface;
 }