'config' classes shouldn't be final

src/Options.php

@@ -6,7 +6,10 @@
 
 namespace Icewind\SMB;
 
-final class Options implements IOptions {
+/**
+ * @psalm-suppress ClassMustBeFinal
+ */
+class Options implements IOptions {
 	/** @var int */
 	private $timeout = 20;
 

src/System.php

@@ -8,7 +8,10 @@ namespace Icewind\SMB;
 
 use Icewind\SMB\Exception\Exception;
 
-final class System implements ISystem {
+/**
+ * @psalm-suppress ClassMustBeFinal
+ */
+class System implements ISystem {
 	/** @var (string|null)[] */
 	private $paths = [];
 

src/TimeZoneProvider.php

@@ -5,7 +5,10 @@
  */
 namespace Icewind\SMB;
 
-final class TimeZoneProvider implements ITimeZoneProvider {
+/**
+ * @psalm-suppress ClassMustBeFinal
+ */
+class TimeZoneProvider implements ITimeZoneProvider {
 	/**
 	 * @var string[]
 	 */