Spanner/src/Session/Session.php
public function delete(array $options = [])
    {
        return $this->connection->deleteSession($options + [
            'name' => $this->name(),
            'database' => $this->database
        ]);
    }
public function delete(array $options = [])
    {
        return $this->connection->deleteSession($options + [
            'name' => $this->name(),
            'database' => $this->database
        ]);
    }
public function delete ( array $ options = [ ] ) { return $ this -> connection -> deleteSession ( $ options + [ 'name' => $ this -> name ( ) , 'database' => $ this -> database ] ) ; }
Delete the session.

@param array $options [optional] Configuration options.
@return void
Delete the session .