Removed deprecated code from #348 (#351)

Author: Nyholm

src/Stream/ResultStream.php

@@ -4,11 +4,32 @@
 
 namespace AsyncAws\Core\Stream;
 
-use AsyncAws\Core\StreamableBodyInterface;
-
 /**
  * Stream for a Result.
  */
-interface ResultStream extends StreamableBodyInterface
+interface ResultStream
 {
+    /**
+     * Download the response in chunks.
+     *
+     *     $fileHandler = fopen('/output.pdf', 'w');
+     *     foreach ($result->getBody()->getChunks() as $chunk) {
+     *       fwrite($fileHandler, $chunk);
+     *     }
+     *
+     * @return iterable<string>
+     */
+    public function getChunks(): iterable;
+
+    /**
+     * Download content into a temporary resource and return a string.
+     */
+    public function getContentAsString(): string;
+
+    /**
+     * Download content into a resource and then return that resource.
+     *
+     * @return resource
+     */
+    public function getContentAsResource();
 }