public function deleteImageVariations($user, $imageIdentifier, $width = null)
{
$query = ['user' => $user, 'imageIdentifier' => $imageIdentifier];
if ($width !== null) {
$query['width'] = $width;
}
$tableName = $this->getTableName($user, $imageIdentifier);
return (bool) $this->getConnection()->delete($tableName, $query);
}