Refactor code.

src/collections_methods.c

@@ -520,9 +520,9 @@ static zend_always_inline uint32_t advance_idx(zend_array* ht, Bucket* ref, uint
     return 0;
 }
 
-static zend_always_inline void tail_cleanup(zend_array* ht,
-    Bucket* ref, uint32_t offset, uint32_t max_offset, zend_bool packed,
-    equal_check_func_t eql, zend_bool subtract, zend_bool del_dup)
+static zend_always_inline void tail_cleanup(zend_array* ht, Bucket* ref, uint32_t offset,
+    uint32_t max_offset, zend_bool packed, equal_check_func_t eql, zend_bool subtract,
+    zend_bool del_dup)
 {
     if (subtract) {
         if (!del_dup) {

stubs/Collection.php

@@ -590,38 +590,6 @@ class Collection implements ArrayAccess, Countable
      */
     function none($predicate) {}
 
-    /**
-     * This method is implemented in handlers.unset_dimension.
-     * There's no method with name 'offsetUnset'.
-     *
-     * @internal
-     */
-    function offsetUnset($key) {}
-
-    /**
-     * This method is implemented in handlers.write_dimension.
-     * There's no method with name 'offsetSet'.
-     *
-     * @internal
-     */
-    function offsetSet($key, $value) {}
-
-    /**
-     * This method is implemented in handlers.read_dimension.
-     * There's no method with name 'offsetGet'.
-     *
-     * @internal
-     */
-    function offsetGet($key) {}
-
-    /**
-     * This method is implemented in handlers.has_dimension.
-     * There's no method with name 'offsetExists'.
-     *
-     * @internal
-     */
-    function offsetExists($key) {}
-
     /**
      * Performs the given action on each element and returns the collection itself afterwards.
      *