@classmethod
def subscription_attach(cls, options=None):
    """Attach a subscription to host

        Usage::

            hammer host subscription attach [OPTIONS]

        Options::

            --host HOST_NAME                  Name to search by
            --host-id HOST_ID                 Host ID
            --quantity Quantity               Quantity of this subscriptions to
                                              add. Defaults to 1
            --subscription-id SUBSCRIPTION_ID ID of subscription
        """
    cls.command_sub = 'subscription attach'
    return cls.execute(cls._construct_command(options))
