# getKeyValue

Get the unique identifier value for the passed in entity, or `null` if the instance is not in session

## Returns

* This function returns *any*

## Arguments

| Key    | Type   | Required | Default | Description                       |
| ------ | ------ | -------- | ------- | --------------------------------- |
| entity | string | Yes      | ---     | The entity to inspect for it's id |

## Examples

```javascript
var pkValue = ormService.getKeyValue( "User" );
```