Get a database connection instance

        :param name: The connection name
        :type name: str

        :return: A Connection instance
        :rtype: orator.connections.connection.Connection

def connection(self, name=None):
        """
        Get a database connection instance

        :param name: The connection name
        :type name: str

        :return: A Connection instance
        :rtype: orator.connections.connection.Connection
        """
        name, type = self._parse_connection_name(name)

        if name not in self._connections:
            logger.debug("Initiating connection %s" % name)
            connection = self._make_connection(name)

            self._set_connection_for_type(connection, type)

            self._connections[name] = self._prepare(connection)

        return self._connections[name]