Use this to extend core API modules.
&$module: Module object
-'APICheckCanExecute': Called during ApiMain::checkCanExecute. Use to
+'ApiCheckCanExecute': Called during ApiMain::checkCanExecute. Use to
further authenticate and authorize API clients before executing the
module. Return false and set a message to cancel the request.
$module: Module object
$user: Current user
-&$message: API usage message to die with
+&$message: API usage message to die with, as a message key or array
+as accepted by ApiBase::dieUsageMsg.
'APIEditBeforeSave': before saving a page with api.php?action=edit,
after processing request parameters. Return false to let the request