Component Autocomplete help

[vivekaris]

in config : main.php

under component
'components' => [
//other component here
//my defined component class
'CustomerUtil'=>[
'class' => 'backend\components\CustomerUtility',
],

], //component closed

plz create auto complete function using component in controller or view
like Yii::$app->CustomerUtil->mymethod(); etc
here is CustomerUtility is component class under component folder