def METHOD_NAME(device=None):
    """
    Check to see if a device already exists in Zenoss.
    Parameters:
        device:         (Optional) Will use the grain 'fqdn' by default
    CLI Example:
    .. code-block:: bash
        salt '*' zenoss.device_exists
    """
    if not device:
        device = __salt__["grains.get"]("fqdn")
    if find_device(device):
        return True
    return False