readNumBytes(opt_size){if(opt_size!==undefined&&opt_size<=0){throw new Error(`readNumBytes expects a positive size (${opt_size} given)`);}
const size=opt_size||tr.b.TraceStream.CHUNK_SIZE;const offset=Math.min(this.cursor_+size,this.data_.length);return this.readToOffset_(offset);}
rewind(){this.cursor_=0;}