\Drupal\Core\Extension\ModuleHandler::getImplementationInfo() refers to $this->hookImplements() which doesn't exist

Problem/Motivation

Snippet from \Drupal\Core\Extension\ModuleHandler::getImplementationInfo():

      // Since $this->hookImplements() may needlessly try to load the include
      // file again, function_exists() is used directly here.
      if (function_exists($module . '_' . $hook)) {
        $this->implementations[$hook][$module] = $include_file ? $hook_info[$hook]['group'] : FALSE;
      }

I can't find any hookImplements() method in core so this comment seems to be incorrect.

Proposed resolution

Find the correct method to reference and change this comment.

Remaining tasks

• Patch to be written
• Patch needs to be reviewed

User interface changes

n/a

API changes

n/a