addDevice()
addDevice(\duncan3dc\Sonos\Interfaces\Devices\DeviceInterface  $device) : $this
                Add a device to this collection.
Parameters
| \duncan3dc\Sonos\Interfaces\Devices\DeviceInterface | $device | The device to add | 
Manage a group of devices.
addDevice(\duncan3dc\Sonos\Interfaces\Devices\DeviceInterface  $device) : $this
                Add a device to this collection.
| \duncan3dc\Sonos\Interfaces\Devices\DeviceInterface | $device | The device to add | 
getDevices() : array<mixed,\duncan3dc\Sonos\Interfaces\Devices\DeviceInterface>
Get all of the devices in this collection.