Cache::merge* functions accept more arguments

API widened to accept more arguments (of the same type) for:

• \Drupal\Core\Cache\Cache::mergeTags()
• \Drupal\Core\Cache\Cache::mergeMaxAges()
• \Drupal\Core\Cache\Cache::mergeContexts()

Examples

1. \Drupal\Core\Cache\Cache::mergeTags()

   Given:

   $cache_tags_foo = ['foo'];
   $cache_tags_bar = ['foo', 'bar'];
   $cache_tags_baz = ['baz'];
   

   Before:

   $merge_tags = \Drupal\Core\Cache\Cache::mergeTags(\Drupal\Core\Cache\Cache::mergeTags($cache_tags_foo, $cache_tags_bar), $cache_tags_baz);
   

   After:

   $merge_tags = \Drupal\Core\Cache\Cache::mergeTags($cache_tags_foo, $cache_tags_bar, $cache_tags_baz);

   Or

   $args = [$cache_tags_foo, $cache_tags_bar, $cache_tags_baz];
   $merge_tags = \Drupal\Core\Cache\Cache::mergeTags(...$args);
   

2. \Drupal\Core\Cache\Cache::mergeMaxAges()

   Given:

   $max_age_foo = 60;
   $max_age_bar = 60;
   $max_age_baz = Cache::PERMANENT;
   

   Before:

   $merged_max_age = \Drupal\Core\Cache\Cache::mergeMaxAges(\Drupal\Core\Cache\Cache::mergeMaxAges($max_age_foo, $max_age_bar), $max_age_baz);
   

   After:

   $merged_max_age = \Drupal\Core\Cache\Cache::mergeMaxAges($max_age_foo, $max_age_bar, $max_age_baz);
   

   Or

   $args = [$max_age_foo, $max_age_bar, $max_age_baz];
   $merged_max_age = \Drupal\Core\Cache\Cache::mergeMaxAges(...$args);
   

3. \Drupal\Core\Cache\Cache::mergeContexts()

   Given:

   $contexts_foo =  ['foo'];
   $contexts_bar =  ['foo', 'bar'];
   $contexts_baz =  ['baz'];
   

   Before:

   $merged_contexts = \Drupal\Core\Cache\Cache::mergeContexts(\Drupal\Core\Cache\Cache::mergeContexts($contexts_foo, $contexts_bar), $contexts_baz);
   

   After:

   $merged_contexts = \Drupal\Core\Cache\Cache::mergeContexts($contexts_foo, $contexts_bar, $contexts_baz);
   

   Or

   $args = [$contexts_foo, $contexts_bar, $contexts_baz];
   $merged_contexts = \Drupal\Core\Cache\Cache::mergeContexts(...$args);