diff --git a/src/Interface/MetadataInterface.php b/src/Interface/MetadataInterface.php
index 5e097a4..d885301 100644
--- a/src/Interface/MetadataInterface.php
+++ b/src/Interface/MetadataInterface.php
@@ -30,6 +30,6 @@ interface MetadataInterface
      *
      * @return bool `true` if the key is set (regardless of what the value is), otherwise `false`.
      */
-    public function has(string $key): bool;
+    public function isSet(string $key): bool;
 }
 
diff --git a/src/Model/Metadata.php b/src/Model/Metadata.php
index ada1869..709acfb 100644
--- a/src/Model/Metadata.php
+++ b/src/Model/Metadata.php
@@ -21,7 +21,7 @@ final class Metadata implements MetadataInterface
 
     public function get(string $key): mixed
     {
-        if (!$this->has($key)) {
+        if (!$this->isSet($key)) {
             throw new MissingKeyException($key);
         }
 
@@ -35,7 +35,7 @@ final class Metadata implements MetadataInterface
         return $this;
     }
 
-    public function has(string $key): bool
+    public function isSet(string $key): bool
     {
         return array_key_exists($key, $this->metadata);
     }
diff --git a/tests/Model/MetadataTest.php b/tests/Model/MetadataTest.php
index f9a3b34..5c4b3b8 100644
--- a/tests/Model/MetadataTest.php
+++ b/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);
     }
 }