protected ModuleHandler::verifyImplementations(&$implementations, $hook)
Verifies an array of implementations loaded from the cache, by including the lazy-loaded $module.$group.inc, and checking function_exists().
Parameters
string[] $implementations: Implementation "group" by module name.
string $hook: The hook name.
Return value
bool TRUE, if all implementations exist. FALSE, if one or more implementations don't exist and need to be removed from the cache.
File
core/lib/Drupal/Core/Exte