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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def set_autostart(vm_, state='on', **kwargs):
    '''
    Set the autostart flag on a VM so that the VM will start with the host
    system on reboot.

    :param vm_: domain name
    :param state: 'on' to auto start the pool, anything else to mark the
                  pool not to be started when the host boots
    :param connection: libvirt connection URI, overriding defaults

        .. versionadded:: 2019.2.0
    :param username: username to connect with, overriding defaults

        .. versionadded:: 2019.2.0
    :param password: password to connect with, overriding defaults

        .. versionadded:: 2019.2.0

    CLI Example:

    .. code-block:: bash

        salt "*" virt.set_autostart <domain> <on | off>
    '''
    conn = __get_conn(**kwargs)
    dom = _get_domain(conn, vm_)

    # return False if state is set to something other then on or off
    ret = False

    if state == 'on':
        ret = dom.setAutostart(1) == 0

    elif state == 'off':
        ret = dom.setAutostart(0) == 0

    conn.close()
    return ret