Pause the stream if the stream is running. Once paused, the
stream stops sending data events.
Returns : The current StreamHelper object, for chaining.
zip
.generateInternalStream({type:"uint8array"})
.on('data', function(chunk) {
// if we push the chunk to an other service which is overloaded, we can
// pause the stream as backpressure.
this.pause();
}).resume(); // start the stream the first time