interface AudioDestinationNode : AudioNode {

    readonly attribute unsigned long maxChannelCount;

};

PASS AudioDestinationNode interface: existence and properties of interface object 
PASS AudioDestinationNode interface object length 
PASS AudioDestinationNode interface object name 
PASS AudioDestinationNode interface: existence and properties of interface prototype object 
PASS AudioDestinationNode interface: existence and properties of interface prototype object's "constructor" property 
PASS AudioDestinationNode interface: existence and properties of interface prototype object's @@unscopables property 
PASS AudioDestinationNode interface: attribute maxChannelCount 
PASS AudioDestinationNode must be primary interface of audio_destination_node 
PASS Stringification of audio_destination_node 
PASS AudioDestinationNode interface: audio_destination_node must inherit property "maxChannelCount" with the proper type