Issue #3035454 by Maithri Shetty, Steven Jones: Replace deprecated method...

Issue #3035454 by Maithri Shetty, Steven Jones: Replace deprecated method getMock calls with createMock

tests/src/Unit/AdvDefTest.php

@@ -61,7 +61,7 @@ class AdvDefTest extends BinaryTestCase {
 
     $advdef = new AdvDef(['data' => $config], 'advdef', [], $loggerMock, $imageFactoryMock, $fileSystemMock, $shellOperationsMock);
 
-    $imagePNGMock = $this->createtMock('\Drupal\Core\Image\ImageInterface');
+    $imagePNGMock = $this->createMock('\Drupal\Core\Image\ImageInterface');
     $imagePNGMock->method('getMimeType')->willReturn('image/png');
     $imageFactoryMock->method('get')->willReturn($imagePNGMock);