addBinaryData(uint8Array) {
    const newData = new Uint8Array(this.data.length + uint8Array.length);
    newData.set(this.data, 0);
    newData.set(uint8Array, this.data.length);
    this.data = newData;

    this.checkForChunks();
  }
Adds more binary data to unpack.

@param {Uint8Array} uint8Array The data to add.