Add File::clear() to allow clearing and reusing/modifying file resolver

app/Engine/File.php

@@ -57,4 +57,14 @@ class File
 	{
 		$this->paths[] = $path;
 	}
+
+	/**
+	 * Clear all search paths.
+	 *
+	 * @return void
+	 */
+	public function clear(): void
+	{
+		$this->paths = [];
+	}
 }