Fix deprecation warnings in PHP 8.2 (#519)

src/CachingStream.php

@@ -20,6 +20,11 @@ final class CachingStream implements StreamInterface
     /** @var int Number of bytes to skip reading due to a write on the buffer */
     private $skipReadBytes = 0;
 
+    /**
+     * @var StreamInterface
+     */
+    private $stream;
+
     /**
      * We will treat the buffer object as the body of the stream
      *

src/DroppingStream.php

@@ -17,6 +17,9 @@ final class DroppingStream implements StreamInterface
     /** @var int */
     private $maxLength;
 
+    /** @var StreamInterface */
+    private $stream;
+
     /**
      * @param StreamInterface $stream    Underlying stream to decorate.
      * @param int             $maxLength Maximum size before dropping data.

src/FnStream.php

@@ -12,6 +12,7 @@
  * Allows for easy testing and extension of a provided stream without needing
  * to create a concrete class for a simple extension point.
  */
+#[\AllowDynamicProperties]
 final class FnStream implements StreamInterface
 {
     private const SLOTS = [

src/InflateStream.php

@@ -21,6 +21,9 @@ final class InflateStream implements StreamInterface
 {
     use StreamDecoratorTrait;
 
+    /** @var StreamInterface */
+    private $stream;
+
     public function __construct(StreamInterface $stream)
     {
         $resource = StreamWrapper::getResource($stream);

src/LazyOpenStream.php

@@ -10,6 +10,7 @@
  * Lazily reads or writes to a file that is opened only after an IO operation
  * take place on the stream.
  */
+#[\AllowDynamicProperties]
 final class LazyOpenStream implements StreamInterface
 {
     use StreamDecoratorTrait;

src/LimitStream.php

@@ -19,6 +19,9 @@ final class LimitStream implements StreamInterface
     /** @var int Limit the number of bytes that can be read */
     private $limit;
 
+    /** @var StreamInterface */
+    private $stream;
+
     /**
      * @param StreamInterface $stream Stream to wrap
      * @param int             $limit  Total number of bytes to allow to be read

src/MultipartStream.php

@@ -17,6 +17,9 @@ final class MultipartStream implements StreamInterface
     /** @var string */
     private $boundary;
 
+    /** @var StreamInterface */
+    private $stream;
+
     /**
      * @param array  $elements Array of associative arrays, each containing a
      *                         required "name" key mapping to the form field,

src/NoSeekStream.php

@@ -13,6 +13,9 @@ final class NoSeekStream implements StreamInterface
 {
     use StreamDecoratorTrait;
 
+    /** @var StreamInterface */
+    private $stream;
+
     public function seek($offset, $whence = SEEK_SET): void
     {
         throw new \RuntimeException('Cannot seek a NoSeekStream');

tests/StreamDecoratorTraitTest.php

@@ -12,6 +12,9 @@
 class Str implements StreamInterface
 {
     use StreamDecoratorTrait;
+
+    /** @var StreamInterface */
+    private $stream;
 }
 
 /**