Change has to isSet

tests/Model/MetadataTest.php

@@ -47,17 +47,17 @@ final class MetadataTest extends TestCase
         $this->assertSame($valueB, $result);
     }
 
-    public function testHasReturnsTrueWhenKeyIsSet(): void
+    public function testIsSetReturnsTrueWhenKeyIsSet(): void
     {
         $key = 'null';
         $this->metadata->set($key, null);
-        $result = $this->metadata->has($key);
+        $result = $this->metadata->isSet($key);
         $this->assertTrue($result);
     }
 
-    public function testHasReturnsFalseWhenKeyIsNotSet(): void
+    public function testIsSetReturnsFalseWhenKeyIsNotSet(): void
     {
-        $result = $this->metadata->has('missing');
+        $result = $this->metadata->isSet('missing');
         $this->assertFalse($result);
     }
 }