Use @param instead of @phpstan-param since it works with Psalm as well.

See discussion here: https://github.com/mailgun/mailgun-php/pull/771#issuecomment-901337117

src/Api/HttpApi.php

@@ -48,7 +48,7 @@ abstract class HttpApi
     {
         if (!is_a($httpClient, ClientInterface::class) &&
             !is_a($httpClient, PluginClient::class)) {
-            throw new \RuntimeException('httpClient must be an instance of 
+            throw new \RuntimeException('httpClient must be an instance of
             Psr\Http\Client\ClientInterface or Http\Client\Common\PluginClient');
         }
         $this->httpClient = $httpClient;
@@ -59,7 +59,7 @@ abstract class HttpApi
     }
 
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      *
      * @return mixed|ResponseInterface
      *

src/Api/Pagination.php

@@ -23,7 +23,7 @@ trait Pagination
     abstract protected function httpGet(string $path, array $parameters = [], array $requestHeaders = []): ResponseInterface;
 
     /**
-     * @phpstan-param class-string $className
+     * @param class-string $className
      */
     abstract protected function hydrateResponse(ResponseInterface $response, string $className);
 
@@ -48,7 +48,7 @@ trait Pagination
     }
 
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      */
     private function getPaginationUrl(string $url, string $class): ?PagingProvider
     {

src/Hydrator/ArrayHydrator.php

@@ -22,7 +22,7 @@ use Psr\Http\Message\ResponseInterface;
 final class ArrayHydrator implements Hydrator
 {
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      *
      * @return array
      */

src/Hydrator/Hydrator.php

@@ -20,7 +20,7 @@ use Psr\Http\Message\ResponseInterface;
 interface Hydrator
 {
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      *
      * @throws HydrationException
      */

src/Hydrator/ModelHydrator.php

@@ -23,7 +23,7 @@ use Psr\Http\Message\ResponseInterface;
 final class ModelHydrator implements Hydrator
 {
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      *
      * @return ResponseInterface
      */

src/Hydrator/NoopHydrator.php

@@ -21,7 +21,7 @@ use Psr\Http\Message\ResponseInterface;
 final class NoopHydrator implements Hydrator
 {
     /**
-     * @phpstan-param class-string $class
+     * @param class-string $class
      *
      * @throws \LogicException
      */