Added implements Stringable for classes with function __toString()

Author: SergeyKleyman

agent/php/ElasticApm/Impl/Util/UrlParts.php

@@ -25,13 +25,14 @@
 
 use Elastic\Apm\Impl\Log\LoggableInterface;
 use Elastic\Apm\Impl\Log\LoggableTrait;
+use Stringable;
 
 /**
  * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
  *
  * @internal
  */
-final class UrlParts implements LoggableInterface
+final class UrlParts implements LoggableInterface, Stringable
 {
     use LoggableTrait;
 

agent/php/ElasticApm/Impl/Util/WildcardListMatcher.php

@@ -23,12 +23,14 @@
 
 namespace Elastic\Apm\Impl\Util;
 
+use Stringable;
+
 /**
  * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
  *
  * @internal
  */
-final class WildcardListMatcher
+final class WildcardListMatcher implements Stringable
 {
     /** @var WildcardMatcher[] */
     private $matchers;

agent/php/ElasticApm/Impl/Util/WildcardMatcher.php

@@ -23,12 +23,14 @@
 
 namespace Elastic\Apm\Impl\Util;
 
+use Stringable;
+
 /**
  * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
  *
  * @internal
  */
-final class WildcardMatcher
+final class WildcardMatcher implements Stringable
 {
     private const CASE_SENSITIVE_PREFIX = '(?-i)';
     private const WILDCARD = '*';