inboxsdk-threadrowview-stream-example.js

sdk.Lists.registerThreadRowViewHandler(function(threadRowView){

  var emitter; //variable name to hoist the emitter to
  var stream = Kefir.stream(function(inEmitter){
    emitter = inEmitter;
    return function(){}; //we need to return a function that gets called when the stream ends
  });

  threadRowView.addLabel(stream); //add the label passing in the stream

  emitter.emit({labelOptions}); //to update the label you call .emit on the emitter with the new label options
  
  someOtherAppThing.addListener(function(){
    emitter.emit(null); //to remove the label you pass null into the stream
  });

});