Fetches a specific URL alias from the database.
$conditions: An array of query conditions.
FALSE if no alias was found or an associative array containing the following keys:
public function load($conditions) {
$select = $this->connection
->select('url_alias');
foreach ($conditions as $field => $value) {
$select
->condition($field, $value);
}
return $select
->fields('url_alias')
->execute()
->fetchAssoc();
}