Added void as return types

src/RequestInterface.php

@@ -55,10 +55,10 @@ public function getRequestTarget(): string;
      *
      * @link http://tools.ietf.org/html/rfc7230#section-5.3 (for the various
      *     request-target forms allowed in request messages)
-     * @param mixed $requestTarget
+     * @param string $requestTarget
      * @return static
      */
-    public function withRequestTarget($requestTarget): RequestInterface;
+    public function withRequestTarget(string $requestTarget): RequestInterface;
 
     /**
      * Retrieves the HTTP method of the request.

src/StreamInterface.php

@@ -32,7 +32,7 @@ public function __toString(): string;
      *
      * @return void
      */
-    public function close();
+    public function close(): void;
 
     /**
      * Separates any underlying resources from the stream.
@@ -84,7 +84,7 @@ public function isSeekable(): bool;
      *     SEEK_END: Set position to end-of-stream plus offset.
      * @throws \RuntimeException on failure.
      */
-    public function seek(int $offset, int $whence = SEEK_SET);
+    public function seek(int $offset, int $whence = SEEK_SET): void;
 
     /**
      * Seek to the beginning of the stream.
@@ -96,7 +96,7 @@ public function seek(int $offset, int $whence = SEEK_SET);
      * @link http://www.php.net/manual/en/function.fseek.php
      * @throws \RuntimeException on failure.
      */
-    public function rewind();
+    public function rewind(): void;
 
     /**
      * Returns whether or not the stream is writable.

src/UploadedFileInterface.php

@@ -62,7 +62,7 @@ public function getStream(): StreamInterface;
      * @throws \RuntimeException on any error during the move operation, or on
      *     the second or subsequent call to the method.
      */
-    public function moveTo(string $targetPath);
+    public function moveTo(string $targetPath): void;
 
     /**
      * Retrieve the file size.