Count function doesn't work

[milito-78]

Hi
I need count query, but I can't use in write function because ColumnQuery class doesn't implement from QueryInterface.
And count function returned ColumnQuery instance.

`
$query = $builder->select()
->setTable('users')
->count()

echo $builder->write($query);
`

Error :
ilPortugues\Sql\QueryBuilder\Builder\GenericBuilder::write(): Argument #1 ($query) must be of type NilPortugues\Sql\QueryBuilder\Manipulation\QueryInterface, NilPortugues\Sql\QueryBuilder\Manipulation\ColumnQuery given

How can I resolve this?