kMIDIPropertyAssociatedEndpoint Declarationlet kMIDIPropertyAssociatedEndpoint: CFString See AlsoConstantskMIDI1UPMaxSysexSizekMIDIDeviceIDFunctionBlockkMIDIDeviceIDUMPGroupkMIDIPropertyUMPActiveGroupBitmapkMIDIPropertyUMPCanTransmitGrouplesskMIDIUInteger14MaxkMIDIUInteger28MaxkMIDIUInteger2MaxkMIDIUInteger4MaxkMIDIUInteger7Max