Mark more interface method returns.

Signed-off-by: Larry Garfield <[email protected]>

src/Reader/AbstractFeed.php

@@ -5,6 +5,7 @@
 use DOMDocument;
 use DOMElement;
 use DOMXPath;
+use ReturnTypeWillChange;
 
 use function call_user_func_array;
 use function count;
@@ -115,6 +116,7 @@ public function getOriginalSourceUri()
      *
      * @return int
      */
+    #[ReturnTypeWillChange]
     public function count()
     {
         return count($this->entries);
@@ -125,6 +127,7 @@ public function count()
      *
      * @return Entry\AbstractEntry
      */
+    #[ReturnTypeWillChange]
     public function current()
     {
         if (0 === strpos($this->getType(), 'rss')) {
@@ -207,6 +210,7 @@ public function getType()
      *
      * @return int
      */
+    #[ReturnTypeWillChange]
     public function key()
     {
         return $this->entriesKey;
@@ -215,6 +219,7 @@ public function key()
     /**
      * Move the feed pointer forward
      */
+    #[ReturnTypeWillChange]
     public function next()
     {
         ++$this->entriesKey;
@@ -223,6 +228,7 @@ public function next()
     /**
      * Reset the pointer in the feed object
      */
+    #[ReturnTypeWillChange]
     public function rewind()
     {
         $this->entriesKey = 0;
@@ -233,6 +239,7 @@ public function rewind()
      *
      * @return bool
      */
+    #[ReturnTypeWillChange]
     public function valid()
     {
         return 0 <= $this->entriesKey && $this->entriesKey < $this->count();