Here is a list of all documented variables with links to the class documentation for each member:

backgroundThread : AsyncSerialImpl
callback : AsyncSerialImpl
error : AsyncSerialImpl
errorMutex : AsyncSerialImpl
io : AsyncSerialImpl
open : AsyncSerialImpl
port : AsyncSerialImpl
quit : AsyncSerialImpl
quitMutex : AsyncSerialImpl
readBuffer : AsyncSerialImpl
readBufferSize : AsyncSerial
writeBuffer : AsyncSerialImpl
writeBufferSize : AsyncSerialImpl
writeQueue : AsyncSerialImpl
writeQueueMutex : AsyncSerialImpl