diff --git a/test/TestAsset/MockStreamHelper.php b/test/TestAsset/MockStreamHelper.php
index 49a5cfa..6a7b36f 100644
--- a/test/TestAsset/MockStreamHelper.php
+++ b/test/TestAsset/MockStreamHelper.php
@@ -11,7 +11,8 @@
 use const SEEK_SET;
 
 /**
- * @psalm-suppress PossiblyUnusedMethod,PossiblyUnusedParam,PossiblyUnusedReturnValue
+ * @psalm-suppress PossiblyUnusedMethod
+ * @psalm-suppress PossiblyUnusedParam
  */
 class MockStreamHelper
 {
@@ -35,22 +36,26 @@ public function __construct(
         $this->trackPeakBufferLength = $trackPeakBufferLength;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleToString(): string
     {
         $this->position = $this->size;
         return is_callable($this->contents) ? ($this->contents)(0) : $this->contents;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleTell(): int
     {
         return $this->position;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleEof(): bool
     {
         return $this->position >= $this->size;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleSeek(int $offset, ?int $whence = SEEK_SET): bool
     {
         if ($offset >= $this->size) {
@@ -61,12 +66,14 @@ public function handleSeek(int $offset, ?int $whence = SEEK_SET): bool
         return true;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleRewind(): bool
     {
         $this->position = 0;
         return true;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleRead(int $length): string
     {
         if ($this->trackPeakBufferLength) {
@@ -82,6 +89,7 @@ public function handleRead(int $length): string
         return $data;
     }
 
+    /** @psalm-suppress PossiblyUnusedReturnValue */
     public function handleGetContents(): string
     {
         $remainingContents = is_callable($this->contents)