diff --git a/composer.json b/composer.json
index e2b28ef..022314d 100644
--- a/composer.json
+++ b/composer.json
@@ -55,7 +55,7 @@
     },
     "scripts": {
         "test": "phpunit",
-        "test-coverage": "XDEBUG_MODE=coverage vendor/bin/phpunit --coverage-html=coverage --coverage-clover=clover.xml && vendor/bin/coverage-check clover.xml 100",
+        "test-coverage": "rm clover.xml && XDEBUG_MODE=coverage vendor/bin/phpunit --coverage-html=coverage --coverage-clover=clover.xml && vendor/bin/coverage-check clover.xml 100",
         "lint": "phpstan --no-progress -cphpstan.neon",
         "beautify": "phpcbf --standard=phpcs.xml",
         "phpcs": "phpcs --standard=phpcs.xml"
diff --git a/flight/Engine.php b/flight/Engine.php
index af33c86..ac71828 100644
--- a/flight/Engine.php
+++ b/flight/Engine.php
@@ -258,6 +258,12 @@ class Engine
         $this->loader->register($name, $class, $params, $callback);
     }
 
+    /** Unregisters a class to a framework method. */
+    public function unregister(string $methodName): void
+    {
+        $this->loader->unregister($methodName);
+    }
+
     /**
      * Adds a pre-filter to a method.
      *
diff --git a/flight/Flight.php b/flight/Flight.php
index 34b7bd5..b22cf0a 100644
--- a/flight/Flight.php
+++ b/flight/Flight.php
@@ -113,6 +113,12 @@ class Flight
         static::__callStatic('register', func_get_args());
     }
 
+    /** Unregisters a class. */
+    public static function unregister(string $methodName): void
+    {
+        static::__callStatic('unregister', func_get_args());
+    }
+
     /**
      * Handles calls to static methods.
      *
diff --git a/flight/net/Response.php b/flight/net/Response.php
index c96a20a..247c6b5 100644
--- a/flight/net/Response.php
+++ b/flight/net/Response.php
@@ -312,6 +312,16 @@ class Response
             \strlen($this->body);
     }
 
+	/**
+	 * Gets the response body
+	 *
+	 * @return string
+	 */
+	public function getBody(): string
+	{
+		return $this->body;
+	}
+
     /**
      * Gets whether response body was sent.
      */
diff --git a/tests/FlightTest.php b/tests/FlightTest.php
index 6907044..07a7346 100644
--- a/tests/FlightTest.php
+++ b/tests/FlightTest.php
@@ -78,6 +78,12 @@ class FlightTest extends PHPUnit\Framework\TestCase
         self::assertTrue(count($loaders) > 0);
         self::assertIsObject($user);
         self::assertInstanceOf(User::class, $user);
+
+		Flight::unregister('user');
+
+		self::expectException(Exception::class);
+		self::expectExceptionMessage('user must be a mapped method.');
+		$user = Flight::user();
     }
 
     // Map a function
diff --git a/tests/ResponseTest.php b/tests/ResponseTest.php
index 75c55b2..6d6f129 100644
--- a/tests/ResponseTest.php
+++ b/tests/ResponseTest.php
@@ -86,24 +86,14 @@ class ResponseTest extends PHPUnit\Framework\TestCase
 
     public function testWrite()
     {
-        $response = new class extends Response {
-            public function getBody()
-            {
-                return $this->body;
-            }
-        };
+        $response = new Response();
         $response->write('test');
         $this->assertEquals('test', $response->getBody());
     }
 
     public function testWriteEmptyString()
     {
-        $response = new class extends Response {
-            public function getBody()
-            {
-                return $this->body;
-            }
-        };
+        $response = new Response();
         $response->write('');
         $this->assertEquals('', $response->getBody());
     }
@@ -116,12 +106,7 @@ class ResponseTest extends PHPUnit\Framework\TestCase
 
     public function testClear()
     {
-        $response = new class extends Response {
-            public function getBody()
-            {
-                return $this->body;
-            }
-        };
+        $response = new Response();
         $response->write('test');
         $response->status(404);
         $response->header('Content-Type', 'text/html');