Notes:
- p:internal parameters
- v:state variables
- m:methodes
- n:notifications


generic
=======
p:devType
p:address
p:parent

n:alive()
n:stateChange(out v:+) 
n:error(out description, out code)

m:isAlive()
m:getDescription(out vendorId, out productId, out version, out parent)
m:getState(out v:*)
m:getBusConfig(in/out busAddr, in/out busPort,  in/out TTL)



lamp.basic (extends generic)
==========
m:powerSwitch(in/out bool target)


lamp.queryable (extends lamp.basic)
==============
v:enlighten (bool)


lamp.dimmer (extends lamp.queryable)
===========
v:level (float, precent)
m:dimmer(in/out float level)


lamp.rgb (extends lamp.queryable)
========
v:level{red, green, blue} (float, precent)x3
v:mode  [fixed,shuffle] ???
m:dimmer(in/out float red, green, blue)
m:setMode(fixed|shuffle) 



shutter.simple (extends generic)
==============
m:up()
m:down() 
m:stop()


shutter.queryable (extends shutter.simple)
=================
v:position (open|closed|opening|closing)



door.simple (extends generic)
===========
v:position (open|closed) 


door.locker (extends generic) 
===========
v:position (locked|unLocked)
m:lock()
m:unLock()



media.simple (extends generic)
============
v:activity (play|pause|stop)
v:volume{left,right} (float percent / db ?)
m:play()
m:pause()
m:next()
m:previous()
m:stop()


media.spotify (extends media.simple)
=============
v:url
m:setUrl ??



composite.simple (extends generic)
================
v:embedded...


composite.gateway (extends composite.simple)
=================
do be done...